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Income Taxes Income Taxes (Tables)
12 Months Ended
Dec. 31, 2020
Income Tax Disclosure [Abstract]  
Schedule of Components of Benefits from Income Taxes
The following table shows the components of the provision for income taxes (in thousands):
 For the year ended December 31,
 20202019
Current:  
State$(5)$10 
Deferred:
U.S. Federal— — 
(Benefit from) provision for income taxes$(5)$10 
Schedule of Effective Income Tax Rate Reconciliation
The principal items accounting for the difference between income taxes computed at the U.S. statutory rate and the (benefit from) provision for income taxes reflected in our Consolidated Statements of Operations are as follows:
 For the year ended December 31,
 20202019
U.S. statutory rate21.0 %21.0 %
State taxes (net of federal tax benefit)5.6 2.0 
Valuation allowance(26.0)(20.7)
Other(0.5)(2.4)
 0.1 %(0.1)%
Schedule of Deferred Tax Assets
The tax effects of temporary differences that give rise to significant portions of the deferred tax assets are as follows (in thousands): 
 At December 31,
 20202019
Accrued expenses and other reserves$1,787 $1,505 
Right-of-use-asset(225)(378)
Lease liabilities271 461 
Tax credits, deferred R&D, and other20 44 
Net operating loss14,510 12,758 
Valuation allowance(16,363)(14,390)
Net deferred tax assets$— $—