Consolidated Statements of Operations (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenues:
Design-to-silicon-yield solutions	$ 13,793,000	$ 13,003,000	$ 27,179,000	$ 23,570,000
Gainshare performance incentives	8,738,000	4,157,000	15,995,000	8,607,000
Total revenues	22,531,000	17,160,000	43,174,000	32,177,000
Costs of design-to-silicon-yield solutions:
Direct costs of design-to-silicon-yield solutions	8,801,000	7,263,000	17,373,000	13,701,000
Amortization of acquired technology	105,000	156,000	261,000	312,000
Total costs of design-to-silicon-yield solutions	8,906,000	7,419,000	17,634,000	14,013,000
Gross profit	13,625,000	9,741,000	25,540,000	18,164,000
Operating expenses:
Research and development	3,291,000	3,717,000	6,448,000	7,544,000
Selling, general and administrative	4,719,000	5,242,000	9,624,000	10,081,000
Amortization of other acquired intangible assets	51,000	51,000	102,000	102,000
Restructuring charges (credits)	91,000	(122,000)	83,000	(133,000)
Total operating expenses	8,152,000	8,888,000	16,257,000	17,594,000
Income from operations	5,473,000	853,000	9,283,000	570,000
Interest and other income (expense), net	155,000	(32,000)	13,000	(411,000)
Income before income taxes	5,628,000	821,000	9,296,000	159,000
Income tax provision	808,000	922,000	977,000	1,018,000
Net income (loss)	4,820,000	(101,000)	8,319,000	(859,000)
Net income (loss) per share:
Basic (in Dollars per share)	$ 0.17	$ 0.00	$ 0.29	$ (0.03)
Diluted (in Dollars per share)	$ 0.16	$ 0.00	$ 0.28	$ (0.03)
Weighted average common shares:
Basic (in Shares)	28,560	28,110	28,472	27,960
Diluted (in Shares)	29,560	28,110	29,303	27,960
Net income (loss)	4,820,000	(101,000)	8,319,000	(859,000)
Other comprehensive income:
Foreign currency translation adjustments, net of tax	(457,000)	51,000	(267,000)	362,000
Reclassification adjustment for other-than-temporary impairment on auction-rate-securities recognized in earnings, net of tax	216,000		216,000
Comprehensive income (loss)	$ 4,579,000	$ (50,000)	$ 8,268,000	$ (497,000)