CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenues [Abstract]
Total revenues	$ 46,409	$ 42,350	$ 129,380	$ 124,710
Costs and Expenses [Abstract]
Costs of revenues	12,484	14,282	38,243	38,555
Research and development	13,516	13,113	39,149	38,428
Selling, general, and administrative	18,094	15,611	50,851	46,022
Amortization of acquired intangible assets	196	328	714	979
Interest and other expense (income), net	(1,511)	(2,018)	(4,682)	(4,000)
Income (loss) before income tax benefit (expense)	3,630	1,034	5,105	4,726
Income tax benefit (expense)	(1,424)	(6,006)	(1,587)	(2,508)
Net income (loss)	2,206	(4,972)	3,518	2,218
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Alternative [Abstract]
Foreign currency translation adjustments, net of tax	975	(552)	123	(679)
Change in unrealized gain (loss) related to available-for-sale debt securities, net of tax	28	(5)	12	2
Total other comprehensive loss	1,003	(557)	135	(677)
Comprehensive income	$ 3,209	$ (5,529)	$ 3,653	$ 1,541
Net income per share:
Basic	$ 0.06	$ (0.13)	$ 0.09	$ 0.06
Diluted	$ 0.06	$ (0.13)	$ 0.09	$ 0.06
Weighted average common shares used to calculate net income per share:
Basic	38,710	38,187	38,542	37,930
Diluted	39,105	38,187	39,028	38,977
Analytics
Revenues [Abstract]
Total revenues	$ 44,750	$ 39,497	$ 121,327	$ 112,957
Integrated Yield Ramp
Revenues [Abstract]
Total revenues	$ 1,659	$ 2,853	$ 8,053	$ 11,753