5. Income Taxes (Details Narrative) - USD ($) $ in Thousands |
12 Months Ended | |||||
|---|---|---|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
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| Income Tax Disclosure [Abstract] | ||||||
| Unrecognized tax benefits, accrued interest | $ 9 | $ 21 | ||||
| Unrecognized tax benefits, net interest benefit | $ 9 | $ 12 | $ 5 | [1] | ||
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