Income Taxes - Summary of Provision (Benefit) for Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current tax expense			$ 91	$ 0
Deferred tax benefit			(3,044)	0
Total	$ 53	$ 0	$ (2,953)	$ 0