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Income Taxes (FASB ASC 740 Income Taxes) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]    
Net operating losses $ 56,300 $ 51,350
Amortization & depreciation 88 60
Research and development costs 691 923
Stock compensation 62 111
Total 57,141 52,444
Less: Valuation allowance $ (57,141) $ (52,444)
Balance