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Schedule of Components of Income Tax Provision (Benefit) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Current:      
Federal $ (741) $ (91)  
State   (5)  
Total current tax benefit (741) (96)  
Deferred:      
Federal 9,872 (7,456) $ (4,091)
State 508 (369) (234)
Total deferred tax benefit 10,380 (7,825) (4,325)
Income tax (benefit) provision $ 9,639 $ (7,921) $ (4,325)