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, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
Federal $ (1,236) $ (1,236) $ (2,471)
Current State and Local Tax Expense (Benefit) 357 0 0
Current Income Tax Expense (Benefit) (879) (1,236) (2,471)
Current income tax expense (benefit), total (879) (1,236) (2,471)
Deferred Federal Income Tax Expense (Benefit) 1,236 1,236 2,471
Deferred State and Local Income Tax Expense (Benefit) (2,660) 2,137 523
Deferred income tax benefit, total (1,424) 3,373 2,994
Income tax benefit $ (2,303) $ 2,137 $ 523