Consolidated Statements of Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenues:
Revenues	$ 85,585	$ 85,794
Costs and Expenses:
Costs of revenues	33,474	42,803
Research and development	32,747	27,998
Selling, general and administrative	26,299	23,934
Amortization of other acquired intangible assets	609	435
Restructuring charges	92	576
Interest and other expense (income), net	(276)	(493)
Loss before income taxes	(7,360)	(9,459)
Income tax benefit	(1,942)	(1,743)
Net loss	(5,418)	(7,716)
Other comprehensive loss:
Foreign currency translation adjustments, net of tax	(204)	(571)
Comprehensive loss	$ (5,622)	$ (8,287)
Net loss per share:
Basic (in dollars per share)	$ (0.17)	$ (0.24)
Diluted (in dollars per share)	$ (0.17)	$ (0.24)
Weighted average common shares:
Basic (in shares)	32,411	32,169
Diluted (in shares)	32,411	32,169
Analytics [Member]
Revenues:
Revenues	$ 49,627	$ 38,502
Integrated Yield Ramp [Member]
Revenues:
Revenues	$ 35,958	$ 47,292