Privilege fee paid in conjunction with the gaming application for the Cherokee County zone.

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Privilege fee returned to the Company in conjunction with the gaming application for the Cherokee County zone.

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- Definition

Represents the number of proposals submitted to the IRGC for a new gaming and entertainment destination.

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No definition available.

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Represents the properties income from operations as a percentage of the Company's consolidated income from operations recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process).

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Represents the properties revenue as a percentage of the Company's consolidated total revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process).

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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

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Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance.

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The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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The total number of new claims filed pertaining to a loss contingency during the period.

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The net result for the period of deducting operating expenses from operating revenues.

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Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

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Commitments and Contingencies (Details) (USD $)	3 Months Ended			3 Months Ended	1 Months Ended			1 Months Ended	3 Months Ended
Commitments and Contingencies (Details) (USD $)	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Mar. 31, 2013 Belle of Sioux City, L.P. (the "Belle") item	Feb. 28, 2013 Breach in pre-development agreement Kansas Penn Gaming, LLC	Dec. 31, 2012 Breach in pre-development agreement Kansas Penn Gaming, LLC	Sep. 11, 2008 Breach in pre-development agreement Kansas Penn Gaming, LLC	Sep. 30, 2008 Breach in pre-development agreement Kansas Penn Gaming, LLC Minimum	Mar. 31, 2013 Pending Litigation Argosy Casino Sioux City facility Belle of Sioux City, L.P. (the "Belle")	Mar. 31, 2013 Pending Litigation Argosy Casino Sioux City facility Belle of Sioux City, L.P. (the "Belle") Minimum Second quarter of 2013	Mar. 31, 2013 Pending Litigation Argosy Casino Sioux City facility Belle of Sioux City, L.P. (the "Belle") Maximum Second quarter of 2013
Litigation
Number of proposals submitted to the IRGC for a new gaming and entertainment destination				2
Goodwill and other intangible impairment charge										$ 65,000,000	$ 80,000,000
Goodwill and other intangible assets									92,800,000
Net revenues	798,246,000	736,059,000							14,000,000
Income from operations	133,315,000	142,615,000							3,700,000
Net revenues, percentage									1.80%
Income from operations, percentage									2.80%
Lawsuits filed against IRGC				3
Damages sought value								50,000,000
Privilege fee paid in conjunction with the gaming application for the Cherokee County zone							25,000,000
Privilege fee returned to the Company in conjunction with the gaming application for the Cherokee County zone					25,000,000
Accrued Liabilities, Current	$ 103,308,000		$ 133,316,000			$ 6,400,000