CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash Flows from Operating Activities:
Net income	$ 25,105	$ 26,138
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation	20,231	16,999
Amortization of intangible assets	6,643	5,812
Share-based compensation expense	2,448	4,244
Change in debt discounts and deferred debt issuance costs	2,017	3,486
Deferred income taxes	95	2,474
(Gain) loss on sale of property and equipment	20	(461)
Changes in other components of working capital	(108,385)	(90,884)
Other long-term liabilities	5,027	1,061
Other, net	95	(2,876)
NET CASH USED IN OPERATING ACTIVITIES	(46,704)	(34,007)
Cash Flows from Investing Activities:
Acquisition of property and equipment	(9,835)	(11,693)
Proceeds from sale of property and equipment	457	583
Investments in securities	(2,910)	(9,696)
Proceeds from maturities and sales of investments in securities	6,870	6,211
NET CASH USED IN INVESTING ACTIVITIES	(5,418)	(14,595)
Cash Flows from Financing Activities:
Proceeds from debt	74,251	348,688
Repayment of debt	(75,939)	(283,915)
Cash payments related to share-based compensation	(1,236)	(694)
Distributions paid to noncontrolling interests	0	(13,500)
Contributions from noncontrolling interests	4,000	0
NET CASH PROVIDED BY FINANCING ACTIVITIES	1,076	50,579
Net increase (decrease) in cash, cash equivalents and restricted cash	(51,046)	1,977
Cash, cash equivalents and restricted cash at beginning of period	451,852	202,101
Cash, cash equivalents and restricted cash at end of period	$ 400,806	$ 204,078