Income Taxes (Schedule of Deferred Tax Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Net operating loss carryforward	$ 17,031	$ 16,272
Research credits		167
Expenses recognized for granting of options and warrants	3,816	2,566
Accrued expenses and reserves	383	83
Lease Liability	1,217
Total deferred tax assets	22,447	19,088
Valuation allowance	(21,220)	(19,088)
Deferred Tax Assets, Net of Valuation Allowance	1,227	$ 0
Deferred tax liabilities:
Goodwill	(110)
Right-of-use assets	(1,138)
Total deferred tax liability	(1,248)
Net deferred tax liability	$ 21