Notes Payable, Related Parties (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Total unsecured promissory note payable, related parties	$ 36	$ 496
Less: current portion of notes payable, related parties	30	462
Total notes payable, long-term	6	34
4.25% and 8% unsecured promissory note [Member]
Total unsecured promissory note payable, related parties	36	73
8% unsecured promissory note [Member]
Total unsecured promissory note payable, related parties		236
6% unsecured promissory note [Member]
Total unsecured promissory note payable, related parties		27
4% unsecured promissory note [Member]
Total unsecured promissory note payable, related parties		$ 160