CONDENSED CONSOLIDATED STATEMENTS OF INCOME - UNAUDITED - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Revenue	$ 262,168	$ 255,134	$ 526,568	$ 508,253
Cost of revenue (exclusive of depreciation, shown separately below)	138,134	132,938	276,552	266,480
Other operating expenses:
Research and development	34,630	32,754	67,611	64,966
Selling, general and administrative	57,465	49,250	114,807	98,065
Depreciation	5,651	6,266	11,789	12,379
Restructuring and reorganization charges	19,005	1,760	32,111	2,820
Total operating expenses	254,885	222,968	502,870	444,710
Operating income	7,283	32,166	23,698	63,543
Other income (expense):
Interest expense	(2,686)	(3,633)	(5,958)	(7,225)
Amortization of original issue discount	0	(784)	0	(1,556)
Interest and investment income, net	126	84	256	208
Loss on derivative liability upon debt conversion	0	0	(7,456)	0
Other, net	2,442	(100)	3,254	(655)
Total other	(118)	(4,433)	(9,904)	(9,228)
Income before income taxes	7,165	27,733	13,794	54,315
Income tax provision	(1,848)	(8,412)	(2,364)	(15,363)
Net income	$ 5,317	$ 19,321	$ 11,430	$ 38,952
Weighted-average shares outstanding:
Basic	31,301	31,875	31,358	31,859
Diluted	31,492	31,993	31,651	32,070
Earnings per common share:
Basic	$ 0.17	$ 0.61	$ 0.36	$ 1.22
Diluted	$ 0.17	$ 0.60	$ 0.36	$ 1.21