CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 300,835	$ 156,761	$ 162,510
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	113,491	113,933	108,931
Asset impairments	9,150
Amortization of debt issuance costs and other non-cash interest	3,509	4,316	4,331
Expenses associated with debt refinancing transactions	36,528	2,099
Deferred income taxes	(151,037)	5,761	19,321
Other expenses and non-cash items	2,623	1,084	1,559
Non-cash revenue	(294)
Income tax benefit of equity compensation	(351)	(2,708)	(1,962)
Non-cash equity compensation	12,965	12,325	10,384
Changes in assets and liabilities, net:
Accounts receivable, prepaid expenses and other assets	16,683	12,189	46,941
Accounts payable, accrued expenses and other liabilities	23,910	(24,219)	(2,456)
Income taxes payable	1,492	1,715	1,517
Net cash provided by operating activities	369,504	283,256	351,076
CASH FLOWS FROM INVESTING ACTIVITIES:
Expenditures for facility acquisition, development and expansions	(27,955)	(30,424)	(125,682)
Acquisition of businesses, net of cash acquired	(36,252)
Expenditures for other capital improvements	(48,570)	(49,014)	(48,258)
Cash paid for leasehold incentive	(12,765)
Decrease in restricted cash	452		1,749
Proceeds from sale of assets	998	1,838	885
Increase in other assets	(3,260)	(4,027)	(2,248)
Payments received on direct financing lease and notes receivable	1,840	1,707	1,515
Net cash used in investing activities	(125,512)	(79,920)	(172,039)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of debt	1,283,000	888,500	383,623
Principal repayments of debt	(1,198,000)	(1,023,500)	(296,589)
Payment of debt issuance and other refinancing and related costs	(37,349)	(6,336)
Proceeds from exercise of stock options	30,171	4,933	2,137
Purchase and retirement of common stock	(6,693)	(2,808)	(239,847)
Income tax benefit of equity compensation	351	2,708	1,962
Increase in restricted cash for dividends	(1,016)
Dividends paid	(299,434)	(59,768)
Net cash used in financing activities	(228,970)	(196,271)	(148,714)
NET INCREASE IN CASH AND CASH EQUIVALENTS	15,022	7,065	30,323
CASH AND CASH EQUIVALENTS, beginning of year	62,897	55,832	25,509
CASH AND CASH EQUIVALENTS, end of year	77,919	62,897	55,832
Cash paid during the period for:
Interest (net of amounts capitalized of $836, $1,057, and $1,584 in 2013, 2012, and 2011, respectively)	40,776	66,943	71,002
Income taxes	$ 7,422	$ 83,864	$ 70,341