Segments (Details 1) (USD $) In Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Reconciliation of net income to Adjusted EBITDA
Net income	$ 41,009	$ 40,759	$ 66,331	$ 77,470
Add (deduct):
Income taxes	23,272	10,211	32,309	30,041
Interest expense	29,777	28,605	59,067	54,615
Loss on early retirement of debt	4,945		4,945
Other (income) expense	(443)	1,454	(5,473)	642
Depreciation and amortization	39,808	34,657	78,730	68,590
Impairment of long-lived assets	1,594	4,688	2,609	5,035
Loss on sale of assets and other	5,694	1,191	6,166	4,358
Deferred lease expenses	870	914	1,650	1,697
Amortization of long-term prepaid rents	617	438	1,284	779
Share based awards compensation expense	2,559	1,941	4,572	3,254
Adjusted EBITDA	$ 149,791	$ 125,116	$ 252,497	$ 246,897

Add (deduct) Abstract.

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The aggregate expense charged against earnings to allocate amounts paid in advance for rent in a systematic and rational manner over the periods for which rent was paid in advance.

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Non-cash rent expense recorded by the entity during the period related to the requirement of an entity to record rent expense on a straight line basis over the term of a lease.

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The gains and losses included in earnings resulting from the sale, disposal, or damage of operating assets and gains and losses realized on other transactions not related to the entity's normal revenue producing operations.

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Reconciliation of net income to Adjusted EBITDA abstract.

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- Definition

Segment Reporting Adjusted Earnings Before Interest Taxes Depreciation And Amortization.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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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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-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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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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The net amount of other nonoperating income and expense, which does not qualify for separate disclosure on the income statement under materiality guidelines.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock options, amortization of restricted stock, and adjustment for officers compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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