1. Summary of Significant Accounting Policies (Detail - Current Accrued Liabilities) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Payables and Accruals [Abstract]
Accrued payroll and related expenses	$ 3,661	$ 4,206
Accrued vacation	265	245
Other accrued liabilities	709	610
Total accrued liabilities	$ 4,635	$ 5,061