Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Condensed Consolidated Statements of Operations [Abstract]
Revenues	$ 236,775	$ 183,879	$ 457,513	$ 398,360
Operating expenses:
Operating costs	132,746	104,746	266,624	235,301
Selling, general and administrative	43,048	36,288	86,126	78,190
Casualty loss	469	31,347	468	31,347
Preopening costs	41	6,240	41	6,240
Depreciation and amortization	29,271	25,951	58,328	53,022
Operating income (loss)	31,200	(20,693)	45,926	(5,740)
Interest expense, net of amounts capitalized	(21,377)	(20,480)	(42,186)	(40,595)
Interest income	3,316	3,286	6,489	6,508
Income from unconsolidated companies	152	190	325	117
Net gain on extinguishment of debt	0	100	0	1,299
Other gains and (losses), net	141	(147)	(50)	(160)
Income (loss) before income taxes and discontinued operations	13,432	(37,744)	10,504	(38,571)
Provision (benefit) for income taxes	4,799	(11,697)	3,832	(10,722)
Income (loss) from continuing operations	8,633	(26,047)	6,672	(27,849)
Income from discontinued operations, net of income taxes	4	3,327	8	3,279
Net income	$ 8,637	$ (22,720)	$ 6,680	$ (24,570)
Basic income (loss) per share:
Income (loss) from continuing operations	$ 0.18	$ (0.55)	$ 0.14	$ (0.59)
Income from discontinued operations, net of income taxes	$ 0	$ 0.07	$ 0	$ 0.07
Net income (loss)	$ 0.18	$ (0.48)	$ 0.14	$ (0.52)
Fully diluted income (loss) per share:
Income (loss) from continuing operations	$ 0.17	$ (0.55)	$ 0.13	$ (0.59)
Income from discontinued operations, net of income taxes	$ 0	$ 0.07	$ 0	$ 0.07
Net income (loss)	$ 0.17	$ (0.48)	$ 0.13	$ (0.52)

Casualty loss.

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(Loss) Income before income taxes and discontinued operations.

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Total costs of sales and operating expenses for the period.

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The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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The amount of net income or loss for the period per each share of common stock outstanding during the reporting period.

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The amount of net income or loss for the period per each share of common stock and dilutive common stock equivalents outstanding during the reporting period.

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Amount represents the difference between the fair value of the payments made and the carrying amount of the debt at the time of its extinguishment.

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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items, cumulative effects of changes in accounting principles, and noncontrolling interest.

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The amount of income (loss) from continuing operations per each share of common stock outstanding during the reporting period.

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The amount of income (loss) from continuing operations available to each share of common stock outstanding during the reporting period and each share that would have been outstanding assuming the issuance of common shares for all dilutive potential common shares outstanding during the reporting period.

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This element represents the overall income (loss) from a disposal group that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items and the cumulative effect of accounting changes before deduction or consideration of the amount which may be allocable to noncontrolling interests, if any. Includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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The amount of income (loss) from disposition of discontinued operations, net of related tax effect, per each share of common stock outstanding during the reporting period.

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The amount of income (loss) from discontinued operations, net of related tax effect, per each diluted share of common stock outstanding during the reporting period.

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. Such amount typically reflects adjustments similar to those made in preparing consolidated statements, including adjustments to eliminate intercompany gains and losses, and to amortize, if appropriate, any difference between cost and underlying equity in net assets of the investee at the date of investment.

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The sum of the current income tax expense (benefit) and the deferred income tax expense (benefit) pertaining to continuing operations.

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The cost of borrowed funds accounted for as interest that was charged against earnings during the period.

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Income derived from investments in debt securities and on cash and cash equivalents the earnings of which reflect the time value of money or transactions in which the payments are for the use or forbearance of money.

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The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.

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The aggregate amount of income (expense) from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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

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Expenditures associated with opening new locations which are noncapital in nature and expensed as incurred.

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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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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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