Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (112,725)	$ (126,190)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	176,200	145,157
Allowance for doubtful accounts and credit losses	1,830	1,869
Gain on disposal of business	(1,052)	0
Deferred income tax benefit	(7,420)	(8,222)
Share-based compensation	26,344	46,675
Restructuring and impairment	4,880	0
Gain on foreign currency forward contracts	(2,903)	0
Mark to market loss on DRG contingent shares	30,839	0
Deferred finance charges	3,140	14,678
Other operating activities	(3,902)	(1,708)
Changes in operating assets and liabilities:
Accounts receivable	129,398	99,470
Prepaid expenses	(13,335)	(3,010)
Other assets	62,818	7,977
Accounts payable	(8,394)	(9,662)
Accrued expenses and other current liabilities	(65,062)	3,388
Deferred revenue	(93,926)	(51,100)
Operating lease right of use assets	5,826	9,438
Operating lease liabilities	(6,611)	(9,934)
Other liabilities	2,077	(6,338)
Net cash provided by operating activities	128,022	112,488
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(78,597)	(43,681)
Acquisition, net of cash acquired	(885,323)	0
Proceeds from sale of product line, net of restricted cash	3,751	0
Acquisition of intangible assets	(5,982)	(2,625)
Net cash used in investing activities	(966,151)	(46,306)
CASH FLOWS FROM FINANCING ACTIVITIES
Repayment of principal on long-term debt	(9,450)	(641,508)
Repayment of revolving credit facility	(65,000)	(50,000)
Proceeds of revolving credit facility	0	5,000
Proceeds from reverse recapitalization	0	682,087
Contingent purchase price payment	(4,115)	0
Payment of debt issuance costs	(5,267)	0
Proceeds from issuance of debt	360,000	0
Proceeds from issuance of ordinary shares	843,752	0
Proceeds from warrant exercises	277,526	0
Proceeds from stock options exercised	1,307	278
Payments related to tax withholding for stock-based compensation	(28,674)	0
Net cash provided by (used in) financing activities	1,370,079	(4,143)
Effect of exchange rate changes on cash and cash equivalents, and restricted cash	(6,447)	1,198
Net increase in cash and cash equivalents, and restricted cash	525,503	63,237
Cash Reconciliation [Roll Forward]
Cash and cash equivalents	76,130	25,575
Restricted cash	9	9
Total cash and cash equivalents, and restricted cash, beginning of period	76,139	25,584
Cash and cash equivalents, and restricted cash, end of period	601,642	88,821
Supplemental Cash Flow Information
Cash paid for interest	61,796	69,711
Cash paid for income tax	20,147	21,128
Capital expenditures included in accounts payable	922	9,759
Tax receivable agreement included in liabilities	0	264,600
Assets received as reverse recapitalization capital	0	1,877
Liabilities assumed as reduction of reverse recapitalization capital	$ 0	$ 5,910