CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net revenues:
Product	$ 22,340	$ 24,424	$ 62,652	$ 68,877
Service	16,720	18,510	48,113	51,594
Contract	21,992	15,756	67,965	48,836
Revenue, net	61,052	58,690	178,730	169,307
Costs of sales:
Product	14,681	15,754	39,699	42,888
Service	11,775	13,184	33,813	44,176
Contract	20,584	14,667	64,151	45,812
Cost of goods and services sold	47,040	43,605	137,663	132,876
Gross margin	14,012	15,085	41,067	36,431
Operating expenses:
Selling, general and administrative	9,410	8,745	28,844	27,730
Research and development	3,309	3,363	9,947	10,428
Impairment of goodwill and intangible assets	0	0	0	20,843
Amortization of identifiable intangible assets	138	257	441	667
Operating expenses	12,857	12,365	39,232	59,668
Operating income (loss) from continuing operations	1,155	2,720	1,835	(23,237)
Other income (expense), net	233	23	440	(106)
Interest expense	(22)	(48)	(64)	(163)
Income (loss) from continuing operations before provision for income taxes	1,366	2,695	2,211	(23,506)
(Provision) benefit for income taxes	(62)	(1,099)	(383)	8,317
Income (loss) from continuing operations	1,304	1,596	1,828	(15,189)
Discontinued Operations
Income (loss) on discontinued operations (net of tax)	50	(394)	1,470	(1,053)
Net income (loss)	$ 1,354	$ 1,202	$ 3,298	$ (16,242)
Basic Earnings per Share:
Income (loss) from continuing operations (in dollars per share)	$ 0.09	$ 0.11	$ 0.12	$ (1.01)
Income (loss) from discontinued operations (in dollars per share)	$ 0.00	$ (0.03)	$ 0.10	$ (0.07)
Net income (loss) (in dollars per share)	$ 0.09	$ 0.08	$ 0.22	$ (1.08)
Diluted Earnings per Share:
Income from continuing operations (in dollars per share)	$ 0.09	$ 0.11	$ 0.12	$ (1.01)
Income (loss) from discontinued operations (in dollars per share)	$ 0.00	$ (0.03)	$ 0.10	$ (0.07)
Net income (loss) (in dollars per share)	$ 0.09	$ 0.08	$ 0.22	$ (1.08)
Weighted average shares outstanding
Basic (in shares)	15,131	15,031	15,105	14,984
Diluted (in shares)	15,207	15,118	15,179	14,984