Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Significant Components of Deferred Tax Assets and Liabilities (Details)

v3.20.1
Income Taxes - Schedule of Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]    
Deferred tax assets : Net operating loss carryforwards $ 48,104 $ 46,096
Deferred tax assets : Stock-based compensation 2,918 2,918
Deferred tax assets : Inventory reserve
Deferred tax assets : Federal R&D credit 2,222 2,222
Deferred tax assets : Accrued expenses 112 49
Deferred tax assets : Depreciation 27
Deferred tax assets : Intangibles 1
Deferred tax assets : Other 98
Total deferred tax assets 53,384 51,383
Deferred tax liabilities : Depreciation (31)
Deferred tax liabilities : Intangibles (134)
Total deferred tax liabilities (165)
Less valuation allowance (53,384) (51,352)
Net deferred tax liability $ (134)