Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 173,256	$ 165,016
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	108,315	85,413
Asset impairments	955	2,238
Amortization of debt issuance costs and other non-cash interest	2,186	2,325
Expenses associated with debt refinancing transactions	701
Deferred income taxes	1,243	(3,648)
Non-cash revenue and other income	(2,143)	(3,384)
Income tax benefit of equity compensation	(529)	(222)
Non-cash equity compensation	11,516	10,438
Other expenses and non-cash items	2,372	3,603
Changes in assets and liabilities, net:
Accounts receivable, prepaid expenses and other assets	(9,686)	16,366
Accounts payable, accrued expenses and other liabilities	16,911	(29,324)
Income taxes payable	644	(132)
Net cash provided by operating activities	305,741	248,689
CASH FLOWS FROM INVESTING ACTIVITIES:
Expenditures for facility development and expansions	(143,847)	(47,178)
Expenditures for other capital improvements	(39,087)	(31,545)
Capitalized lease payments	(34,470)	(70,000)
Acquisition of businesses	(13,795)
Decrease in restricted cash	1,251	2,983
Proceeds from sale of assets	501	806
Decrease in other assets	2,106	1,967
Payments received on direct financing lease and notes receivable	1,662	1,473
Net cash used in investing activities	(225,679)	(141,494)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of debt	522,000	185,000
Principal repayments of debt	(402,000)	(150,000)
Payment of debt issuance and other refinancing and related costs	(4,575)
Payment of lease obligations	(3,156)
Dividends paid	(187,451)	(174,686)
Income tax benefit of equity compensation	529	222
Purchase and retirement of common stock	(9,454)	(3,052)
Decrease (increase) in restricted cash for dividends	500	(100)
Proceeds from exercise of stock options	7,554	6,349
Net cash used in financing activities	(76,053)	(136,267)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	4,009	(29,072)
CASH AND CASH EQUIVALENTS, beginning of period	74,393	77,919
CASH AND CASH EQUIVALENTS, end of period	78,402	48,847
Cash paid during the period for:
Interest (net of amounts capitalized of $4,546 and $1,664 in 2015 and 2014, respectively)	20,397	22,525
Income taxes	$ 6,858	$ 14,299