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Income Taxes (Details 2) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]    
Provision at Federal statutory rate $ (1,911) $ (322)
State taxes 8 13
Permanent differences/other 65 581
Tax Cuts and Jobs Act of 2017 Rate Change 0 22,714
Stock-based compensation 81 365
Federal valuation allowance (used) provided 1,756 (22,747)
Provision (benefit) for income taxes $ (1) $ 604