Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Due from vendors	$ 36	$ 95
Prepaid maintenance contracts	117	119
Deferred installation costs	14	30
Prepaid insurance	145	132
Prepaid equity issuance costs	0	100
Prepaid software licenses	96	123
Other prepaid expenses	145	342
Deferred financing costs	72	84
Prepaid expenses and other current assets	$ 625	$ 1,025