Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Condensed Consolidated Statements Of Operations [Abstract]
Revenues	$ 9,317	$ 13,003	$ 16,030	$ 24,283
Cost of revenues	5,243	7,474	9,017	13,519
Gross margin	4,074	5,529	7,013	10,764
Research and development expenses	2,021	2,062	3,857	3,979
Selling, general and administrative expenses	3,224	3,369	6,351	6,595
Income (loss) from operations	(1,171)	98	(3,195)	190
Interest income and other	27	(76)	(77)	(41)
Income (loss) before income taxes	(1,144)	22	(3,272)	149
Income tax provision	56	(121)	74	(86)
Net income (loss)	$ (1,200)	$ 143	$ (3,346)	$ 235
Net income (loss) per share - Basic	$ (0.17)	$ 0.02	$ (0.48)	$ 0.03
Net income (loss) per share - Diluted	$ (0.17)	$ 0.02	$ (0.48)	$ 0.03
Weighted average shares outstanding - Basic	6,907	6,935	6,933	6,934
Weighted average shares outstanding - Diluted	6,907	6,994	6,933	6,988