Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues:
DIS	$ 37,171	$ 36,064	$ 37,794
Diagnostic Imaging	12,205	14,449	15,951
Total revenues	49,376	50,513	53,745
Cost of revenues:
DIS	27,828	27,293	29,672
Diagnostic Imaging	7,432	10,128	9,315
Total cost of revenues	35,260	37,421	38,987
Gross profit	14,116	13,092	14,758
Operating expenses:
Research and development	1,025	3,716	2,738
Marketing and sales	4,411	6,402	7,622
General and administrative	8,118	7,839	7,741
Amortization of intangible assets	231	233	331
Restructuring charges	1,728	0	(164)
Gain on sale of assets and license agreement	(1,568)	0	0
Total operating expenses	13,945	18,190	18,268
Income (loss) from operations	171	(5,098)	(3,510)
Other income (expense):
Interest and other income, net	63	101	267
Interest expense	(15)	(4)	(17)
Total other income	48	97	250
Income (loss) before income taxes	219	(5,001)	(3,260)
Income tax benefit (expense)	45	77	(82)
Net income (loss)	264	(4,924)	(3,342)
Net income (loss) per share:
Earnings Per Share, Basic (in dollars per share)	$ 0.01	$ (0.26)	$ (0.18)
Earnings Per Share, Diluted (in dollars per share)	$ 0.01	$ (0.26)	$ (0.18)
Shares used in per share computations:
Weighted average shares outstanding - basic (in dollars per share)	18,789	19,274	19,052
Weighted average shares outstanding - diluted (in dollars per share)	19,159	19,274	19,052
Common Stock, Dividends, Per Share, Declared	$ 0.05	$ 0.00	$ 0.00
Other Comprehensive loss:
Unrealized loss on marketable securities	(19)	(16)	(30)
Total other comprehensive loss	(19)	(16)	(30)
Comprehensive loss	245	(4,940)	(3,372)
Accumulated Other Comprehensive Income (Loss) [Member]
Other Comprehensive loss:
Unrealized loss on marketable securities	$ (19)	$ (16)	$ (30)