CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities attributable to continuing operations:
Net income and comprehensive income	$ 19,049	$ 14,401
Less: Loss from discontinued operations, net of tax	263	4,575
Income from continuing operations	19,312	18,976
Adjustments to reconcile income from continuing operations to net cash provided by operating activities attributable to continuing operations:
Loss on disposal of assets	348	530
Amortization of intangibles	11,312	13,757
Depreciation	3,718	3,378
Non-cash compensation expense	16,436	11,917
Deferred income taxes	8,638	(3,061)
Change in fair value of contingent consideration	797	(8,122)
Unrealized gain on investments	(40,072)	0
Bad debt expense	516	880
Amortization of debt issuance costs	1,275	582
Amortization of convertible debt discount	7,346	3,111
Reduction in carrying amount of ROU asset, offset by change in operating lease liabilities	7,132	(196)
Changes in current assets and liabilities:
Accounts receivable	(33,743)	(6,952)
Prepaid and other current assets	(915)	(1,430)
Accounts payable, accrued expenses and other current liabilities	7,154	(3,271)
Income taxes receivable	(89)	65
Other, net	(240)	(862)
Net cash provided by operating activities attributable to continuing operations	8,925	29,302
Cash flows from investing activities attributable to continuing operations:
Capital expenditures	(10,553)	(4,189)
Equity investment	(1,180)	(80,000)
Net cash used in investing activities attributable to continuing operations	(11,733)	(84,189)
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	(4,801)	(5,087)
Net proceeds from revolving credit facility	0	55,000
Payment of debt issuance costs	(168)	(306)
Contingent consideration payments	0	(3,000)
Other financing activities	(31)	(6)
Net cash (used in) provided by financing activities attributable to continuing operations	(5,000)	46,601
Total cash used in continuing operations	(7,808)	(8,286)
Net cash used in operating activities attributable to discontinued operations	(71)	(752)
Total cash used in discontinued operations	(71)	(752)
Net decrease in cash, cash equivalents, restricted cash and restricted cash equivalents	(7,879)	(9,038)
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period	170,049	60,339
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period	$ 162,170	$ 51,301