SUPPLEMENTAL DETAIL FOR CERTAIN COMPONENTS OF CONSOLIDATED BALANCE SHEET COMPONENTS Other Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued compensation	$ 1,543	$ 1,296
Accrued interest expense	1,290	1,134
Accrued operating expenses	488	759
Accounts payable	1,055	726
Deferred rent	663	634
Other	667	901
Total Other Liabilities	$ 5,706	$ 5,450