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Income Taxes (Details 3) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Deferred tax assets:    
Accruals $ 1,109 $ 1,053
Stock compensation 1,352 1,210
Net operating losses 17,190 14,681
Basis difference in fixed assets 7 2
Total deferred tax assets 19,658 16,946
Valuation allowance $ (19,658) $ (16,946)
Total net deferred tax assets