Consolidated Statements Of Operations (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Revenues:
DIS	$ 37,794	$ 39,542	$ 52,318
Product	15,951	16,641	17,278
Total revenues	53,745	56,183	69,596
Cost of revenues:
DIS	29,672	32,561	38,476
Product	9,315	11,618	10,895
Total cost of revenues	38,987	44,179	49,371
Gross profit	14,758	12,004	20,225
Operating expenses:
Research and development	2,738	2,875	3,360
Marketing and sales	7,622	5,922	6,977
General and administrative	7,741	9,007	8,921
Amortization and impairment of intangible assets	331	435	590
Restructuring loss (gain)	(164)	355	319
Total operating expenses	18,268	18,594	20,167
Income (loss) from operations	(3,510)	(6,590)	58
Other income (expense):
Interest income	165	378	499
Other income (expense)	3	(2)	51
Total other income	168	376	550
Net income (loss)	$ (3,342)	$ (6,214)	$ 608
Net income (loss) per share:
Basic and diluted	$ (0.18)	$ (0.33)	$ 0.03
Shares used in per share computations:
Weighted average shares outstanding - basic	19,052	18,774	18,836
Weighted average shares outstanding - diluted	19,052	18,774	19,320