Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities
Net loss	$ (1,121)	$ (194,167)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	29,158	49,689
Amortization of operating lease right-of-use assets	15,320	27,003
Loss on impairment of assets	144	65,137
Gain on sales and disposal of subsidiaries and property and equipment, net	(6,587)	(13,516)
Loss on derivative instruments	0	24,517
Loss on debt extinguishment	0	77,999
Non-cash interest expense	825	5,662
Non-cash share-based compensation expense	5,122	4,778
Bad debt expense	8,196	21,372
Deferred income taxes	9,549	66,965
Unrealized foreign currency exchange loss (gain)	15,115	(13,455)
Non-cash loss from non-income tax contingencies	175	11,925
Other, net	(3,182)	(3,879)
Changes in operating assets and liabilities:
Receivables	(37,548)	(43,148)
Prepaid expenses and other assets	(4,094)	(13,558)
Accounts payable and accrued expenses	(25,644)	(33,013)
Income tax receivable/payable, net	41,215	(17,859)
Deferred revenue and other liabilities	(1,005)	(4,600)
Net cash provided by operating activities	45,638	17,852
Cash flows from investing activities
Purchase of property and equipment	(8,091)	(20,551)
Expenditures for deferred costs	(130)	(4,444)
Receipts from sales of discontinued operations, net of cash sold, and property and equipment	10,259	725,323
Payments on derivatives related to sale of discontinued operations	0	(50,341)
Net cash provided by investing activities	2,038	649,987
Cash flows from financing activities
Proceeds from issuance of long-term debt, net of original issue discount	204,691	55,394
Payments on long-term debt	(230,476)	(932,901)
Payment of dividend equivalent rights for vested share-based awards	(4,361)	0
Proceeds from exercise of stock options	11,624	374
Withholding of shares to satisfy tax withholding for vested stock awards and exercised stock options	(1,373)	(1,236)
Payments to repurchase common stock	(206,289)	(251,374)
Payments of call premiums and debt issuance costs	0	(32,980)
Net cash used in financing activities	(226,184)	(1,162,723)
Effects of exchange rate changes on Cash and cash equivalents and Restricted cash	10,034	(3,438)
Change in cash included in current assets held for sale	0	164,936
Net change in Cash and cash equivalents and Restricted cash	(168,474)	(333,386)
Cash and cash equivalents and Restricted cash at beginning of period	345,575	867,298
Cash and cash equivalents and Restricted cash at end of period	$ 177,101	$ 533,912