Discontinued Operations (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of Portamedic and subsidiary	$ 3,543,000	$ 0	$ 3,618,000	$ 65,000
Portamedic Service Line [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	19,173,000	21,371,000	62,437,000	72,077,000
Loss from operations before income taxes	(1,958,000)	(997,000)	(4,709,000)	(5,446,000)
Maximum tax effect of discontinued operation	100,000	100,000	100,000	100,000
Assets held for sale:
Inventories					941,000
Other current assets					400,000
Property, plant and equipment, net					2,080,000
Other assets					225,000
Total assets					3,646,000
Liabilities held for sale:
Deferred rent					104,000
Capital leases					116,000
Total liabilities					$ 220,000