Income Taxes (Details 3) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Allowance for doubtful accounts	$ 187	$ 143
Accrued liabilities	826	781
Net operating loss carry-forwards	23,933	20,686
Intangible assets	4,334	4,473
Share-based compensation expense	2,120	2,250
Other	406	363
Total gross deferred tax assets	31,806	28,696
Valuation allowance	(31,168)	(28,687)
Deferred tax assets, net of valuation allowance	638	9
Deferred tax liabilities:
Right of use assets	(638)	0
Fixed assets	0	(9)
Total gross deferred tax liabilities	(638)	(9)
Net deferred tax assets	$ 0	$ 0