Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Revenues	$ 45,709	$ 50,599
Cost of revenues	21,944	23,302
Gross profit	23,765	27,297
Operating expenses:
Research and development	9,802	8,895
Selling, general and administrative	9,179	9,875
Amortization	416	443
Total operating expenses	19,397	19,213
Operating income	4,368	8,084
Interest income (expense)	(1,076)	42
Other income (expense)	(419)	24
Income before income taxes	2,873	8,150
Provision for income taxes	1,011	1,411
Net income	$ 1,862	$ 6,739
Earnings per share:
Basic	$ 0.06	$ 0.21
Diluted	$ 0.06	$ 0.21
Weighted average shares outstanding:
Basic	32,026	31,537
Diluted	32,713	32,071