CONDENSED CONSOLIDATED STATEMENTS OF INCOME - UNAUDITED - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Revenue	$ 264,400	$ 253,119
Cost of revenue (exclusive of depreciation, shown separately below)	138,418	133,542
Other operating expenses:
Research and development	32,981	32,212
Selling, general and administrative	57,342	48,815
Depreciation	6,138	6,113
Restructuring and reorganization charges	13,106	1,060
Total operating expenses	247,985	221,742
Operating income	16,415	31,377
Other income (expense):
Interest expense	(3,272)	(3,592)
Amortization of original issue discount	0	(772)
Interest and investment income, net	130	124
Loss on derivative liability upon debt conversion	(7,456)	0
Other, net	812	(555)
Total other	(9,786)	(4,795)
Income before income taxes	6,629	26,582
Income tax provision	(516)	(6,951)
Net income	$ 6,113	$ 19,631
Weighted-average shares outstanding:
Basic	31,416	31,844
Diluted	31,810	32,146
Earnings per common share:
Basic	$ 0.19	$ 0.62
Diluted	$ 0.19	$ 0.61