MORITZ, Circuit Judge.

Wasatch Equality and four snowboarders (collectively, Wasatch) brought suit challenging a snowboard ban at Alta Ski Area in Utah. In its complaint, Wasatch alleged the ban unconstitutionally discriminates against snowboarders and denies them equal protection of the law in violation of the Fifth and Fourteenth Amendments to the United States Constitution.

Recognizing that private action won't sustain a civil rights complaint, Wasatch further alleged the ban constitutes "state action" because Alta operates its ski resort on federal land via a permit issued by the United States Forest Service — a permit that requires the Forest Service to annually review and approve Alta's site management plan. The district court disagreed, and dismissed this case for failure to identify a state action. Because we agree Wasatch hasn't plausibly established that the snowboard ban constitutes state action, we affirm.

BACKGROUND

Alta Ski Lifts Company is a privately owned Utah corporation that operates Alta Ski Area in the Wasatch-Cache National Forest near Salt Lake City. Alta Ski Area covers 2130 acres and about 1800 of those acres are located on Forest Service land. Alta is one of 120 ski areas nationwide that operates on federal land via a Forest Service Ski Area Term Special Use Permit. Under the terms of its permit, Alta pays the Forest Service a usage fee each year, calculated as a percentage of Alta's lift-ticket sales and ski-school operations. For 2009-2012, the usage fee ranged from $304,396 to $473,792. All told, Alta's usage fee accounts for less than 0.1% of the Forest Service's annual budget.

Under the terms of the permit, the Forest Service reviews and approves Alta's winter site operation plan each year. This site plan includes a hill management section detailing Alta's management decisions regarding its ski runs. In relevant part, the hill management section grants Alta the right to exclude any skiing device from its ski runs that it deems causes risk to the user of the device or other skiers, causes undue damage to the quality of the snow, or is inconsistent with Alta's business management decisions. Under the authority of this section, Alta bans snowboarding from its ski runs and markets itself as a skier-only mountain. It is one of three ski resorts in the country that bans snowboarding, and the only one of the three operating on federal land.

Plaintiff Wasatch Equality is a Utah nonprofit corporation "formed for the purpose of, among other things, promoting equality and harmony among skiers and snowboarders, as well as promoting equal access and fair use of public lands by the public, regardless of whether snowboarding or skiing." Joint App. 14-15. Plaintiffs Bjorn Leines — a professional snowboarder — and Rick Alden, Drew Hicken, and Richard Varga — Utah residents — are all snowboarders who use neighboring resorts and who wish to snowboard at Alta. Wasatch brought suit challenging Alta's snowboard ban as violating the Equal Protection Clause of the Fourteenth Amendment as applied to the federal government through the Fifth Amendment's Due Process Clause.

According to Wasatch's complaint, skiers and snowboarders have harbored animosity and hostility towards each other since the snowboard's introduction. Wasatch further posits that Alta's snowboarding ban resulted from Alta's animus towards snowboarders as a group and the ban isn't supported by a rational basis. In support, Wasatch points to Alta's website and trail maps — both of which prominently state that "Alta is a skiers' mountain" and that "snowboarding is not allowed" — and to signs in Alta's ticket windows that declare in large, bold letters, "NO SNOWBOARDS." Joint App. 22-23. Wasatch's complaint also quoted Gus Gilman, Director of Alta Ski Patrol, as saying that Alta maintains its snowboard ban because Alta "sort of [has] a customer base of people who prefer to ski where there's no snowboarding." Id. at 24. And the complaint quoted Chic Morton, Alta's General Manager, as saying "anyone who uses the words rip, tear, or shred will never be welcome at Alta," and that "as long as [he was] alive snowboarders will never be allowed at Alta." Id. at 25.1

Based on the Forest Service's annual approval of Alta's winter site operation plan and its receipt of an annual usage fee, the complaint attributed the snowboard ban to the Forest Service. Because Alta has no rational basis for the ban, Wasatch argued, the ban violates its equal protection rights. Wasatch thus sought a declaration that Alta's snowboard ban is unconstitutional and requested an injunction preventing Alta from enforcing its anti-snowboard policy.

Alta and the Forest Service separately moved to dismiss the case under Federal Rule of Civil Procedure 12(b)(6) for failure to state a claim. In pertinent part, Alta and the Forest Service argued the Equal Protection Clause didn't apply to Wasatch's claims because the snowboard ban isn't state action.

In granting Alta's and the Forest Service's motions to dismiss, the district court found that the Forest Service did nothing to influence Alta's decision to ban snowboards and the Forest Service's receipt of a usage fee each year didn't sufficiently involve the government to otherwise attribute the ban to the government. Wasatch appeals, arguing the district court erred by failing to accept as true the allegations in the complaint and grant all reasonable inferences in favor of Wasatch, which led to the court's erroneous conclusion that no state action exists.

For the reasons discussed below, we agree Wasatch's complaint hasn't plausibly established state action, and we affirm the dismissal of this action.2

DISCUSSION

We "review de novo the grant of a Rule 12(b)(6) motion to dismiss for failure to state a claim," Gee v. Pacheco, 627 F.3d 1178, 1183 (10th Cir.2010), and uphold the district court's dismissal if the complaint doesn't "contain sufficient factual matter, accepted as true, to `state a claim to relief that is plausible on its face,'" Ashcroft v. Iqbal, 556 U.S. 662, 678, 129 S.Ct. 1937, 173 L.Ed.2d 868 (2009) (quoting Bell Atl. Corp. v. Twombly, 550 U.S. 544, 570, 127 S.Ct. 1955, 167 L.Ed.2d 929 (2007)). Although "the sufficiency of a complaint must rest on its contents alone[,] [t]here are exceptions to this restriction on what the court can consider, but they are quite limited: (1) documents that the complaint incorporates by reference; (2) documents referred to in the complaint if the documents are central to the plaintiff's claim and the parties do not dispute the documents' authenticity; and (3) matters of which a court may take judicial notice." Gee, 627 F.3d at 1186 (citations and internal quotation marks omitted).

In reviewing the complaint, we "accept all facts pleaded by the non-moving party as true and grant all reasonable inferences from the pleadings in favor of the same," Colony Ins. Co. v. Burke, 698 F.3d 1222, 1228 (10th Cir.2012) (citation omitted), but we don't accept the nonmoving party's legal conclusions as true. Iqbal, 556 U.S. at 678, 129 S.Ct. 1937. "Threadbare recitals of the elements of a cause of action, supported by mere conclusory statements, do not suffice." Id.

Applying these principles here leads us to ask whether Wasatch's complaint sufficiently pleaded facts that, if accepted as true, plausibly entitle it to relief under the Equal Protection Clause of the Fourteenth Amendment. That clause provides that no state shall "deny to any person within its jurisdiction the equal protection of the laws." U.S. Const. amend. XIV, § 1.3 "That language establishes an `essential dichotomy' between governmental action, which is subject to scrutiny under the Fourteenth Amendment, and private conduct, which `however discriminatory or wrongful,' is not subject to the Fourteenth Amendment's prohibitions." Gallagher v. Neil Young Freedom Concert, 49 F.3d 1442, 1446 (10th Cir.1995) (quoting Jackson v. Metro. Edison Co., 419 U.S. 345, 349, 95 S.Ct. 449, 42 L.Ed.2d 477 (1974)).

We evaluate whether challenged conduct constitutes state action using a flexible approach. See id. at 1447. For example, in some instances this court has applied a symbiotic-relationship test, asking "whether the state has `so far insinuated itself into a position of interdependence' with the private party that there is a `symbiotic relationship' between them." Id. (first quoting Burton v. Wilmington Parking Auth., 365 U.S. 715, 725, 81 S.Ct. 856, 6 L.Ed.2d 45 (1961); and then quoting Moose Lodge No. 107 v. Irvis, 407 U.S. 163, 175, 92 S.Ct. 1965, 32 L.Ed.2d 627 (1972)). In others, this court has applied a nexus test, asking "whether there is a sufficiently close nexus between the State and the challenged action of the regulated entity so that the action of the latter may be fairly treated as that of the State itself." Id. (quoting Jackson, 419 U.S. at 351, 95 S.Ct. 449). In still other instances, this court has applied a joint-action test, asking whether the "private party is `a willful participant in joint activity with the State or its agents.'" Id. (quoting Adickes v. S.H. Kress & Co., 398 U.S. 144, 152, 90 S.Ct. 1598, 26 L.Ed.2d 142 (1970)). And finally, this court has applied a public-function test, asking whether the private entity exercises "powers traditionally exclusively reserved to the State." Id. (quoting Jackson, 419 U.S. at 352, 95 S.Ct. 449). Regardless of the label, however, the underlying question for each test is whether "`the conduct allegedly causing the deprivation of a federal right' must be `fairly attributable to the State.'" Id. (quoting Lugar v. Edmondson Oil Co., 457 U.S. 922, 937, 102 S.Ct. 2744, 73 L.Ed.2d 482 (1982)).

In an effort to establish state action, Wasatch's complaint pleaded the following facts: (1) the Forest Service owns 85% (1802.7 acres) of the land comprising Alta's ski area; (2) Alta operates under a Forest Service Ski Area Term Special Use Permit; (3) the Forest Service annually reviews and approves Alta's winter site operation plan, under which Alta retains the right to exclude devices from its ski runs; (4) the Forest Service approves Alta's use of the land including signage, ski routes, avalanche control, and general safety; (5) the Forest Service receives a fee from Alta each year based on a percentage of revenues from lift-ticket sales and ski-school operations; (6) Alta's trail map includes both Alta and Forest Service logos and says snowboarding is not allowed; and (7) Alta's general manager publicly stated Alta prohibits snowboards because, among other reasons, "the Forest Service says it's OK." Joint App. 30.4

In its opening brief, Wasatch characterizes the relationship between Alta and the Forest Service as "complicated and entangled," and it asserts that it has pleaded facts sufficient to "establish state action under any applicable test." Aplt. Br. 22, 27. However, Wasatch devotes considerable discussion to the symbiotic-relationship test. To establish state action under that test, Wasatch's complaint must plausibly establish that the Forest Service "`has so far insinuated itself into a position of interdependence' with [Alta] that `it must be recognized as a joint participant in the challenged activity.'" Gallagher, 49 F.3d at 1451 (quoting Burton, 365 U.S. at 725, 81 S.Ct. 856). Wasatch asserts this relationship exists here, and relies heavily on the Supreme Court's holding in Burton and this court's holding in Milo v. Cushing Municipal Hospital, 861 F.2d 1194 (10th Cir.1988), for support.

In Burton, a restaurant leased commercial space in a parking facility owned by the state parking authority and refused service to patrons based on their race. 365 U.S. at 720, 81 S.Ct. 856. A state statute created the parking authority to provide adequate parking facilities in view of a parking crisis, and the Court found the parking authority couldn't have constructed the parking structure at issue but for the lease because anticipated bond proceeds and parking revenues would be insufficient to cover the cost of construction. Id. at 717-19, 81 S.Ct. 856. Because the restaurant was thus an "indispensable part" of the parking authority achieving its purpose, and because "the peculiar relationship of the restaurant to the parking facility in which it is located confers on each an incidental variety of mutual benefits," the Court attributed the restaurant's actions to the state. Id. at 723-24, 81 S.Ct. 856.

Similarly, in Milo a city "substantially participated in the funding, creation, and financial structure of [a] hospital" and then leased the hospital to a public trust created under state law. 861 F.2d at 1195-96. The public trust in turn entered into an operating agreement with a private corporation to manage the hospital, including the handling of medical staff privilege and discipline matters. Id. at 1195. After the hospital summarily suspended two physicians, the physicians brought suit against the hospital and the private corporation asserting First and Fourteenth Amendment violations. Id. Relying on Burton, this court concluded the hospital was a public institution because "merely contracting [with the private entity] for day-to-day management" didn't insulate the state actors from liability, and thus the management actions constituted state action for purposes of a 42 U.S.C. § 1983 claim. Id. at 1196-97.

Wasatch asserts the facts asserted in its complaint regarding the relationship between Alta and the Forest Service are akin to the facts established in Burton and Milo. Namely, Wasatch argues that "not only does the discrimination under long-term lease of public property result in a significant amount of revenue for both Alta and the Government, Defendants openly market that discrimination in an attempt to increase revenue." Aplt. Br. 29. Wasatch further argues that the Forest Service "depends on Alta to operate the resort on National Forest land for the public, as set forth by the Government's special-use permitting scheme," and that without Alta's existence, "the Government would be forced to either assume or abandon the operations or enter into an identical arrangement for another entity like Alta to assume operations." Aplt. Br. 30.

But the facts alleged here are far different than those asserted in Burton or Milo. Unlike the restaurant in Burton, Alta Ski Area is not "indispensable" to the Forest Service's purpose. The Forest Service, by virtue of the Alta permit, does receive approximately $400,000 each year in fees, but this amounts to only 0.1% of its annual budget.5 Indeed, Alta is only one of more than 120 ski resorts that operate under a similar permit. See S.Rep. No. 112-55, at 2 (2011). Thus, the existence, or non-existence, of one of these approximately 120 ski resorts isn't indispensable to the Forest Service's purpose.

Nor does Wasatch allege in its complaint that the Forest Service participated in the funding, creation, and financial structure of the ski area and then simply contracted the management responsibilities to a private corporation, as the public trust did in Milo. See 861 F.2d at 1196-97. Rather, the facts of the complaint suggest the Forest Service merely leases federal land to Alta. The complaint thus fails to establish state action under the symbiotic-relationship test.

Wasatch also argues the snowboard ban meets the nexus test for state action. Under that test, Wasatch's complaint must plausibly "demonstrate that `there is a sufficiently close nexus' between the government and the challenged conduct such that the conduct `may be fairly treated as that of the State itself.'" Gallagher, 49 F.3d at 1448 (emphasis added) (quoting Jackson, 419 U.S. at 351, 95 S.Ct. 449).

Even after granting all reasonable inferences in Wasatch's favor, the complaint at best establishes that the Forest Service knows about the snowboard ban (through, e.g., Alta's signage and trail maps) and continues to approve its permit each year notwithstanding the ban. Wasatch nonetheless argues this is enough involvement by the Forest Service to constitute state action, because the snowboard ban "exists only because the Government either approves or ignores it when reviewing and approving each annual Plan, which must be prepared in consultation with the Government to become part of the Permit." Aplt. Br. 32.

But the complaint doesn't plausibly establish that the Forest Service "approves or ignores" the ban itself as Wasatch seems to now argue, see Aplt. Br. 32, but rather at best indicates that the Forest Service annually approves a winter site operation plan that, in part, authorizes Alta "to exclude any type of skiing device that [it] deem[s] creates an unnecessary risk to other skiers and/or the user of the device, or any device [it] deem[s] causes undue damages to the quality of the snow, or is not consistent with [its] business management decisions," Joint App. 95. At most, the Forest Service approves Alta's plan with knowledge that Alta excludes snowboards under this provision, but the Forest Service doesn't make Alta's permit contingent upon a snowboard ban or otherwise encourage a snowboard ban.

And as Alta points out, general awareness of the ban is not sufficient to establish state action. The Supreme Court has explained that "a State normally can be held responsible for a private decision only when it has exercised coercive power or has provided such significant encouragement, either overt or covert, that the choice must in law be deemed to be that of the State." Blum v. Yaretsky, 457 U.S. 991, 1004, 102 S.Ct. 2777, 73 L.Ed.2d 534 (1982). And "[m]ere approval of or acquiescence in the initiatives of a private party is not sufficient to justify holding the State responsible for those initiatives under the terms of the Fourteenth Amendment." Id. at 1004-05, 102 S.Ct. 2777. (emphasis added). Here, the pleaded facts simply don't demonstrate the Forest Service in any way encouraged the snowboard ban or assisted in enforcing the ban. The complaint thus fails to establish state action under the nexus test.

Wasatch also asserts its complaint pleaded facts sufficient to show joint action between Alta and the Forest Service. To satisfy the joint-action test, Wasatch's complaint must plausibly establish that Alta is a "willful participant in joint action with the [Forest Service] or its agents." Gallagher, 49 F.3d at 1453 (quoting Dennis v. Sparks, 449 U.S. 24, 27, 101 S.Ct. 183, 66 L.Ed.2d 185 (1980)). For this inquiry, the focus "is not on long-term interdependence between the [Forest Service] and [Alta]" but instead on whether the Forest Service and Alta "have acted in concert in effecting a particular deprivation of constitutional rights." Id. But as with the nexus test, "the mere acquiescence of [the Forest Service] in the actions of [Alta] is not sufficient." Id. (emphasis added). And as discussed, Wasatch's complaint at best establishes the Forest Service knows of the ban and acquiesces in its continued application, and notably doesn't establish that the Forest Service and Alta "act[] in concert in effecting" the snowboard ban. See id. The complaint thus fails to plausibly establish joint action between the Forest Service and Alta.

Finally, Wasatch argues its complaint plausibly establishes state action under the public-function test. To satisfy that test, Wasatch's complaint must plausibly establish that the Forest Service delegated to Alta "a function `traditionally exclusively reserved to the State.'" Gallagher, 49 F.3d at 1456 (quoting Jackson, 419 U.S. at 352, 95 S.Ct. 449). We have cautioned that this test is difficult to satisfy because a function is rarely deemed exclusively reserved to the state. Id.

Nonetheless, Wasatch argues the facts of its complaint plausibly satisfy this difficult test, because "[f]ew public functions are as traditionally and exclusively performed by the Government as management of National Forest property." Aplt. Br. 34. Wasatch again misses the point. While managing National Forest property may be a traditional government function, operating a ski resort — including deciding whether to permit or allow certain devices — isn't a power "traditionally associated with sovereignty." Jackson, 419 U.S. at 353, 95 S.Ct. 449. The complaint thus fails to establish state action under the public-function test.

Even if we grant all reasonable inferences in Wasatch's favor, the pleaded facts at best establish that each year the Forest Service — with knowledge of the snowboard ban — reviews and approves Alta's site plan and receives from Alta a usage fee. This isn't enough to establish state action for purposes of the Fourteenth Amendment. See Blum, 457 U.S. at 1004-05, 102 S.Ct. Because Wasatch's complaint doesn't plausibly establish state action, we affirm the district court's Rule 12(b)(6) dismissal. And because this conclusion controls all issues on appeal, we decline to address Wasatch's challenges to the district court's alternative rulings.

Affirmed.