CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities attributable to continuing operations:
Net (loss) income and comprehensive (loss) income	$ (10,826,000)	$ 19,049,000
Less: Loss from discontinued operations, net of tax	3,000	263,000
Net (loss) income from continuing operations	(10,823,000)	19,312,000
Adjustments to reconcile net (loss) income from continuing operations to net cash provided by operating activities attributable to continuing operations:
Loss on impairments and disposal of assets	431,000	348,000
Amortization of intangibles	7,917,000	11,312,000
Depreciation	4,854,000	3,718,000
Non-cash compensation expense	15,080,000	16,436,000
Deferred income taxes	326,000	8,638,000
Change in fair value of contingent consideration	0	797,000
Gain on investments	0	(40,072,000)
Bad debt expense	850,000	516,000
Amortization of debt issuance costs	2,467,000	1,275,000
Amortization of debt discount	879,000	7,346,000
Reduction in carrying amount of ROU asset, offset by change in operating lease liabilities	(49,000)	7,132,000
Changes in current assets and liabilities:
Accounts receivable	(17,488,000)	(33,743,000)
Prepaid and other current assets	(3,666,000)	(915,000)
Accounts payable, accrued expenses and other current liabilities	9,320,000	7,154,000
Income taxes receivable	48,000	(89,000)
Other, net	(146,000)	(240,000)
Net cash provided by operating activities attributable to continuing operations	10,000,000	8,925,000
Cash flows from investing activities attributable to continuing operations:
Capital expenditures	(3,465,000)	(10,553,000)
Equity investment	(15,000,000)	(1,180,000)
Net cash used in investing activities attributable to continuing operations	(18,465,000)	(11,733,000)
Cash flows from financing activities attributable to continuing operations:
Payments related to net-share settlement of stock-based compensation, net of proceeds from exercise of stock options	(3,085,000)	(4,801,000)
Purchase of treasury stock	(43,009,000)	0
Payment of debt issuance costs	(4,000)	(168,000)
Other financing activities	0	(31,000)
Net cash used in financing activities attributable to continuing operations	(46,098,000)	(5,000,000)
Total cash used in continuing operations	(54,563,000)	(7,808,000)
Net cash used in operating activities attributable to discontinued operations	(1,000)	(71,000)
Total cash used in discontinued operations	(1,000)	(71,000)
Net decrease in cash, cash equivalents, restricted cash and restricted cash equivalents	(54,564,000)	(7,879,000)
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period	251,342,000	170,049,000
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period	$ 196,778,000	$ 162,170,000