Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash from operating activities
Net (loss) income	$ (68,119)	$ 1,028	$ 158,403
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	30,820	29,032	25,507
Amortization of operating lease right-of-use assets	3,187	3,199	3,701
Impairment, net	22,022	0	0
Deferred income taxes	(993)	250	29,002
Stock-based compensation, including as amortized	43,234	17,154	10,308
Gain on sale of business	(4,156)	(380)	(187,658)
Gain on sale of equity-method investment and recovery of note receivable	(40)	(12,767)	0
Other	175	249	125
Changes in operating assets and liabilities:
Accounts receivable	(4,198)	(2,103)	(2,782)
Prepaid expenses and other current assets	(5,398)	(2,168)	(5,894)
Other assets	(1,883)	(1,259)	(519)
Accounts payable	1,176	497	(903)
Accrued employee expenses	4,281	11,264	2,799
Accrued expenses	3,452	(1,773)	6,878
Operating lease liabilities	(2,524)	1,268	(564)
Other liabilities	4,329	(8,100)	9,896
Net cash provided by operating activities	25,365	35,391	48,299
Cash from investing activities
Purchases of available-for-sale investments	(79,279)	(241,215)	(43,877)
Proceeds from sales of available-for-sale investments	994	43,198	16,711
Proceeds from maturities of available-for-sale investments	87,883	107,354	27,330
Purchases of property and equipment	(6,540)	(8,103)	(19,038)
Capitalization of software development costs	(14,688)	(24,615)	(26,042)
Proceeds from sale of business, net of cash divested	5,124	402	191,427
Proceeds from sale of equity-method investment	40	12,520	0
Net cash (used in) provided by investing activities	(6,466)	(110,459)	146,511
Cash from financing activities
Proceeds from stock option exercises	4,474	2,614	822
Tax withholding for net share settlement	(10,637)	(9,962)	(12,196)
Payment of contingent consideration	0	0	(5,977)
Proceeds from issuance of debt	0	0	50,752
Principal payments on debt	0	0	(99,565)
Purchase of treasury stock	0	0	(4,194)
Net cash used in financing activities	(6,163)	(7,348)	(70,358)
Net increase (decrease) in cash and cash equivalents	12,736	(82,416)	124,452
Cash, cash equivalents and restricted cash
Beginning of period	58,283	140,699	16,247
End of period	71,019	58,283	140,699
Supplemental disclosure of cash flow information
Cash paid for interest	0	0	1,815
Cash paid for income taxes	3,338	9,324	85
Cash paid for amounts included in the measurement of lease liabilities included in operating cash flows	3,933	1,618	2,198
Right-of-use assets obtained in exchange for operating lease liabilities	$ 0	$ 11,945	$ 6,644