CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Net revenues:
Product	$ 90,847	$ 90,524
Service	61,529	66,144
Contract	89,018	88,491
Revenue, net	241,394	245,159
Costs of sales:
Product	62,317	65,300
Service	43,659	46,073
Contract	82,583	82,841
Cost of goods and services sold	188,559	194,214
Gross margin	52,835	50,945
Operating expenses:
Selling, general and administrative	37,925	40,476
Research and development	15,567	13,697
Impairment of goodwill and intangible assets	0	300
Amortization of identifiable intangible assets	0	455
Operating expenses	53,492	54,928
Operating loss from continuing operations	(657)	(3,983)
Other income, net	506	876
Interest expense	(60)	(69)
Loss from continuing operations before provision for income taxes	(211)	(3,176)
Benefit for income taxes	780	1,414
Loss from continuing operations	569	(1,762)
Discontinued operations
Income (loss) on discontinued operations (net of tax)	(211)	1,447
Net income (loss)	$ 358	$ (315)
Basic Earnings per Share:
Loss from continuing operations (in dollars per share)	$ 0.04	$ (0.12)
Income (loss) from discontinued operations (in dollars per share)	$ (0.01)	$ 0.10
Net income (loss) (in dollars per share)	$ 0.02	$ (0.02)
Diluted Earnings per Share:
Loss from continuing operations (in dollars per share)	$ 0.04	$ (0.12)
Income (loss) from discontinued operations (in dollars per share)	$ (0.01)	$ 0.10
Net income (loss) (in dollars per share)	$ 0.02	$ (0.02)
Weighted average shares outstanding
Basic (in shares)	15,240	15,115
Diluted (in shares)	15,273	15,115