Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 33,238	$ 49,340
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	37,952	35,523
Asset impairments	536
Amortization of debt issuance costs and other non-cash interest	1,356	857
Deferred income taxes	2,395	1,140
Non-cash revenue and other income	(2,705)	(2,937)
Non-cash equity compensation	4,610	3,812
Other expenses and non-cash items	3,810	3,423
Changes in assets and liabilities, net:
Accounts receivable, prepaid expenses and other assets	7,648	(2,564)
Accounts payable, accrued expenses and other liabilities	(14,780)	(11,921)
Income taxes payable	1,317	1,150
Net cash provided by operating activities	75,377	77,823
CASH FLOWS FROM INVESTING ACTIVITIES:
Expenditures for facility development and expansions	(22,233)	(36,037)
Expenditures for other capital improvements	(8,618)	(9,972)
Acquisitions, net of cash acquired	(8,849)	(30,931)
Proceeds from sale of assets	42	331
Increase in other assets	(2,411)	(1,391)
Net cash used in investing activities	(42,069)	(78,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of debt and borrowings from credit facility	374,000	197,141
Scheduled principal repayments	(7,553)	(2,876)
Principal repayments of credit facility	(108,000)	(153,000)
Payment of debt issuance and other refinancing and related costs	(285)	(85)
Payment of lease obligations for financing leases	(135)	(134)
Contingent consideration for acquisition of businesses		(6,378)
Dividends paid	(54,527)	(52,365)
Purchase and retirement of common stock	(3,560)	(3,070)
Proceeds from exercise of stock options		207
Net cash provided by (used in) financing activities	199,940	(20,560)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	233,248	(20,737)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of period	119,093	74,137
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of period	352,341	53,400
NON-CASH INVESTING AND FINANCING ACTIVITIES
Debt assumed on acquisition of property portfolio	52,217
Establishment of right of use assets and lease liabilities	62	82,917
Cash paid during the period for:
Interest (net of amounts capitalized of $0.5 million and $0.9 million in 2020 and 2019, respectively)	12,881	$ 18,522
Income taxes refunded, net	$ (285)