Debt Recapitalization, Liquidity and Going Concern - Narrative (Details) - USD ($) $ in Thousands			3 Months Ended		6 Months Ended
	Jul. 31, 2017	Jul. 28, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015
Line of Credit Facility [Line Items]
Working capital deficit			$ 8,667		$ 8,667
Restricted cash			18		18		$ 18
Net loss			590	$ 605	1,258	$ 1,316
Net cash provided by operating activities					29	312
Cash paid during the period for interest					542	563
Cash			$ 1,097	$ 1,480	$ 1,097	$ 1,480	$ 1,140	$ 1,764
Subsequent Event
Line of Credit Facility [Line Items]
Extinguishment of debt and accrued interest, net of new borrowings	$ 9,362	$ 9,362
Cash	$ 1,270