Liquidity (Details) (USD $)	3 Months Ended								12 Months Ended					0 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Feb. 21, 2014 Subsequent Event [Member]	Sep. 30, 2013 Portamedic Service Line [Member] holdback_component	Dec. 31, 2013 Portamedic Service Line [Member]	Mar. 31, 2014 Portamedic Service Line [Member] Subsequent Event [Member]	Dec. 31, 2013 Minimum [Member] Portamedic Service Line [Member]	Dec. 31, 2013 Maximum [Member] Portamedic Service Line [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents	$ 3,970,000				$ 8,319,000				$ 3,970,000	$ 8,319,000	$ 16,917,000	$ 21,391,000
Working capital									8,600,000
(Loss) income from continuing operations	(1,487,000)	(3,564,000)	(3,177,000)	(2,027,000)	(1,059,000)	(1,318,000)	(2,614,000)	(2,086,000)	(10,255,000)	(7,077,000)	(7,802,000)
Restructuring charges, continuing operations									813,000	566,000	34,000
Net cash (used in) provided by operating activities of continuing operations									(7,029,000)	(4,177,000)	786,000
Holdback Amount														2,000,000
Number of holdback components														2
Holdback amount, component one														1,000,000
Holdback amount, component two														1,000,000
Amount of Holdback received									6,053,000	0	0			8,100,000	6,100,000	800,000
Term of loan and security agreement									3 years
Maximum borrowing capacity under Loan and Security Agreement	10,000,000								10,000,000
Loan maximum defined, based on eligible receivables	85.00%								85.00%
Remaining borrowing capacity under Loan and Security Agreement	10,000,000								10,000,000
Reserve on eligible borrowings	1,500,000								1,500,000				500,000
Additional borrowing availability under Loan and Security Agreement	2,000,000								2,000,000
Borrowings outstanding under Loan and Security Agreement	0								0
Eligible Receivables Generated, Percent																	60.00%	75.00%
Selling, general and administrative expenses									$ 20,273,000	$ 19,543,000	$ 21,293,000				$ 10,000,000