Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net (loss)/income	$ (3,885)	$ 86,803
Less: Loss from discontinued operations, net of tax	(94)	(91)
Net (loss)/income from continuing operations	(3,791)	86,894
Adjustments to reconcile net income from continuing operations to net cash provided by operating activities:
Depreciation and amortization	96,325	93,487
Amortization of debt issuance costs	2,583	2,744
Amortization of operating lease assets	7,923	0
Impairment loss	47,834	49
Provision for bad debt and claim losses	7,577	7,480
Share-based compensation	17,755	19,799
Equity in losses/(earnings) of affiliates, net of taxes	108	(3,070)
Gain on sale of property and equipment	0	(19)
Loss on early extinguishment of debt	1,453	0
Deferred income tax	(8,291)	8,743
Loss/(gain) on investments and other, net	2,150	(2,289)
Tax indemnification release	13,394	0
Change in operating assets and liabilities, net of acquisitions:
Accounts receivable	(38,845)	259
Prepaid expenses and other current assets	(6,189)	(6,075)
Accounts payable and other accrued expenses	(24,962)	(27,234)
Contract liabilities	12,329	(13,692)
Income taxes	15,890	(9,704)
Dividends received from investments in affiliates	0	775
Other assets and other liabilities	(22,649)	(9,732)
Net cash provided by operating activities - continuing operations	120,594	148,415
Net cash used in operating activities - discontinued operations	0	(4)
Total cash provided by operating activities	120,594	148,411
Cash flows from investing activities:
Purchases of property and equipment	(44,714)	(21,378)
Purchases of capitalized data and other intangible assets	(18,307)	(18,589)
Cash paid for acquisitions, net of cash acquired	(41)	(141,056)
Purchases of investments	(658)	0
Cash received from sale of business-line	1,082	0
Proceeds from sale of property and equipment	0	197
Proceeds from investments	1,157	980
Net cash used in investing activities - continuing operations	(61,481)	(179,846)
Net cash provided by investing activities - discontinued operations	0	0
Total cash used in investing activities	(61,481)	(179,846)
Cash flows from financing activities:
Proceeds from long-term debt	1,770,000	120,095
Debt issuance costs	(9,621)	0
Repayment of long-term debt	(1,789,702)	(68,898)
Proceeds from issuance of shares in connection with share-based compensation	6,559	17,566
Payment of tax withholdings related to net share settlements	(9,267)	(11,682)
Shares repurchased and retired	(29,030)	(63,322)
Contingent consideration payments subsequent to acquisitions	(600)	0
Net cash used in financing activities - continuing operations	(61,661)	(6,241)
Net cash provided by financing activities - discontinued operations	0	0
Total cash used in financing activities	(61,661)	(6,241)
Effect of exchange rate on cash, cash equivalents and restricted cash	26	1,379
Net change in cash, cash equivalents and restricted cash	(2,522)	(36,297)
Cash, cash equivalents and restricted cash at beginning of period	98,250	132,154
Less: Change in cash, cash equivalents and restricted cash - discontinued operations	0	(4)
Plus: Cash swept from discontinued operations	0	(4)
Cash, cash equivalents and restricted cash at end of period	95,728	95,857
Supplemental disclosures of cash flow information:
Cash paid for interest	35,393	33,101
Cash paid for income taxes	9,909	24,230
Cash refunds from income taxes	16,061	3,108
Non-cash investing activities:
Capital expenditures included in accounts payable and other accrued expenses	$ 17,179	$ 11,139