CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Cash flows from operating activities:
Net (loss) income	$ 14,528	$ 16,180	$ (26,641)	$ 47,163
Less: Loss from discontinued operations	3,603	(4,096)	(59,299)	(3,556)
Income from continuing operations	10,925	20,276	32,658	50,719
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Depreciation and amortization			42,278	49,042
Non-cash lease expense, net			(5,289)	(8,822)
Stock-based compensation expense			19,901	8,804
Deferred taxes			(2,978)	4,468
Impairment of assets and long-term investments			0	531
Equity in net loss of unconsolidated investments	617	257	1,222	321
Gain on sale of businesses, net	0	(8,363)	0	(8,363)
Other income, net			(1,208)	(4,292)
Changes in operating assets and liabilities (net of businesses acquired):
Accounts receivable and contract assets, net			72,287	(18,212)
Prepaid expenses and other assets			29,698	(4,532)
Accounts payable			21,022	(2,628)
Accrued expenses			1,054	42,129
Accrued compensation and benefits			(1,921)	(10,325)
Deferred revenue			(68,065)	(4,823)
Other liabilities			(21,658)	4,528
Net cash provided by operating activities - continuing operations			119,001	98,545
Net cash used in operating activities - discontinued operations			(23,234)	(239,018)
Net cash provided by (used in) operating activities			95,767	(140,473)
Cash flows from investing activities:
Capital expenditures			(1,876)	(1,050)
Capitalized software			(26,207)	(26,595)
Cash paid for business acquisitions, net of cash acquired			(24,106)	0
Sale of businesses and other investments, net of cash divested, and distributions received			672,498	5,380
Purchases of equity securities, other investments and related intangible assets, net			(1,342)	(219)
Net cash provided by (used in) investing activities - continuing operations			618,967	(22,484)
Net cash used in investing activities - discontinued operations			(15,248)	(32,388)
Net cash provided by (used in) investing activities			603,719	(54,872)
Cash flows from financing activities:
Taxes paid related to net share settlement of equity awards			(32,666)	(12,718)
Credit facility payments			(200,000)	(50,000)
Credit facility borrowings, net of issuance costs			22,335	250,000
Repurchase of common stock			(177,031)	(308,953)
Intercompany to/from parent/subsidiaries			11,685	47,323
Payment of acquisition and other financing obligations			0	(2,400)
Net cash used in financing activities - continuing operations			(375,677)	(76,748)
Net cash used in financing activities - discontinued operations			(11,697)	(48,572)
Net cash used in financing activities			(387,374)	(125,320)
Effect of exchange rate changes on cash and cash equivalents			(728)	(480)
Net increase (decrease) in cash and cash equivalents			311,384	(321,145)
Cash, cash equivalents and restricted cash, beginning of period			190,520	537,465	$ 537,465
Cash, cash equivalents and restricted cash, end of period	501,904	216,320	501,904	216,320	$ 190,520
Less: Cash and cash equivalents attributable to discontinued operations	(8,000)	(72,680)	(8,000)	(72,680)
Cash, cash equivalents and restricted cash, end of period, excluding discontinued operations	$ 493,904	$ 143,640	$ 493,904	$ 143,640