Liquidity (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Oct. 31, 2013
Organization, Presentation and Liquidity [Line Items]
Cash	$ 1,631,000	$ 2,101,000	$ 1,631,000	$ 2,101,000	$ 1,938,000	$ 2,294,000
Working capital	2,512,000		2,512,000
Restricted cash	148,000		148,000
Net loss	(269,000)	$ 1,000	(503,000)	(833,000)
Net cash provided by operating activities			969,000	$ 1,246,000
Senior secured term loan facility [Member] | Main Street Capital Corporation [Member]
Organization, Presentation and Liquidity [Line Items]
Revolving loan facility, maximum borrowing capacity							$ 11,000,000
Main Street Term Loan	9,000,000		9,000,000		9,000,000
Revolving loan facility, unused borrowing capacity	2,000,000		2,000,000
Senior secured revolving loan facility [Member] | Main Street Capital Corporation [Member]
Organization, Presentation and Liquidity [Line Items]
Revolving loan facility, maximum borrowing capacity							$ 2,000,000
Main Street Revolver	100,000		100,000		$ 400,000
Revolving loan facility, unused borrowing capacity	$ 1,900,000		$ 1,900,000