Liquidity (Details) (USD $)	3 Months Ended		9 Months Ended					0 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Oct. 04, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2013 Portamedic Service Line [Member]	Sep. 30, 2013 Portamedic Service Line [Member]	Sep. 30, 2013 Minimum [Member] Portamedic Service Line [Member]	Sep. 30, 2013 Maximum [Member] Portamedic Service Line [Member]
Liquidity [Abstract]
Loss from continuing operations	$ (3,291,000)	$ (1,189,000)	$ (8,158,000)	$ (5,456,000)
Cash and cash equivalents	6,655,000	8,161,000	6,655,000	8,161,000		8,319,000	16,917,000
Working capital									9,400,000
Borrowings outstanding under Loan and Security Agreement	2,608,000		2,608,000			0
Remaining borrowing capacity under Loan and Security Agreement	40,000		40,000
Net cash used in operating activities of continuing operations			(7,786,000)	(5,147,000)
Capital expenditures			(1,062,000)	(3,346,000)
Term of loan and security agreement			3 years
Loan maximum defined, based on eligible receivables	85.00%		85.00%
Maximum borrowing capacity under Loan and Security Agreement	10,000,000		10,000,000
Additional borrowing availability under Loan and Security Agreement	6,000,000		6,000,000
Loan maximum defined, based on eligible receivables, reserve	800,000		800,000		1,500,000
EBITDA twelve month requirement	3,200,000		3,200,000
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from the sale of Portamedic			6,053,000	0				8,100,000	6,100,000
Consideration amount								8,400,000	8,400,000
Holdback amount								2,000,000	2,000,000
Holdback release, business days after closing								3 days
Holdback release, amounts paid threshold								1,000,000	1,000,000
Holdback release, amount less deductions for indemnification claims								1,000,000	1,000,000
Holdback receivable recorded								2,000,000	2,000,000
Eligible receivables generated, percent										65.00%	75.00%
Eligible receivables generated									9,000,000
Selling, general and administrative expenses	$ 5,002,000	$ 4,655,000	$ 15,372,000	$ 15,054,000					$ 7,400,000