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INCOME TAXES (Details 3) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Deferred tax assets:    
Accrued expenses $ 37 $ 25
Deferred Revenue 217 217
Accounts receivable 18 19
Inventory 117 92
Stock based compensation 138 137
Tax Credits and NOL Carryforward 354 1,141
Other 150 6
Property and equipment 0 35
Amortization 57 64
Long-term deferred tax assets 1,088 1,736
Less: Valuation allowance (172) (1,727)
Deferred tax assets 916 9
Deferred tax Liabilities:    
Property and equipment (176) 0
Prepaid Expenses (15) (9)
Deferred tax liabilities (191) (9)
Net Deferred tax assets $ 725 $ 0