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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2020
Income Tax Disclosure [Abstract]  
Provision for Income Taxes The (provision for) benefit from income taxes for the years ended December 31, 2020 and 2019, consists of the following (in thousands):
 20202019
Current benefit (provision):  
Federal benefit (expense)$15,587 $86 
State (expense) benefit(149)(55)
Total current benefit (provision)15,438 31 
Deferred benefit (provision):  
Federal benefit (expense)(10,234)662 
State(412)— 
Total deferred benefit (expense)(10,646)662 
Total benefit (provision)$4,792 $693 
Effective Income Tax Rate Reconciliation
The effective tax rate for the years ended December 31, 2020 and 2019, differs from the statutory rate as follows:

 20202019
Statutory rate21.0 %21.0 %
State and local taxes(17.0)%(3.7)%
Uncertain tax position— %— %
Goodwill impairment — %(13.7)%
Research and development credit— %1.4 %
Stock based compensation(13.1)%(0.8)%
Nondeductible compensation(11.6)%(0.3)%
Effect of CARES Act180.3 %— %
Other0.5 %0.9 %
Effective rate160.1 %4.8 %
Deferred re-measurement for rate change— %— %
Effective rate160.1 %4.8 %
Deferred Tax Assets and Liabilities
The income tax effects of temporary differences that give rise to significant portions of deferred income tax assets and (liabilities) as of December 31, 2020 and 2019, are as follows (in thousands):

 20202019
Deferred income tax assets:  
Net operating loss$3,361 $1,519 
Research and development credits1,363 161 
Stock compensation175 580 
Deferred compensation705 389 
Other398 160 
Total deferred income tax assets6,002 2,809 
Deferred income tax liabilities:  
Property and equipment(47,626)(33,761)
Goodwill and other intangible assets(266)(291)
Total deferred income tax liabilities(47,892)(34,052)
Net deferred income tax liabilities$(41,890)$(31,243)