Annual report pursuant to Section 13 and 15(d)

Summary of Provision for Income Taxes from Continuing Operations (Detail)

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Summary of Provision for Income Taxes from Continuing Operations (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
Federal $ (1,236) $ (2,471) $ 0
Current income tax expense (benefit), total (1,236) (2,471) 0
Federal 1,236 2,471 (4,943)
State 2,137 523 0
Deferred income tax benefit, total 3,373 2,994 (4,943)
Income tax benefit $ 2,137 $ 523 $ (4,943)