Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating Loss Carryforwards [Line Items]
Provision (benefit) for income taxes	$ 19	$ (1,370)	$ (187)	$ (3,008)
Percentage of benefit/provision on pre-tax loss			15.00%	7.00%
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Portion of state deferred tax assets, not able to be utilized	$ 5,900		$ 5,900
Federal [Member]
Operating Loss Carryforwards [Line Items]
Deferred tax assets valuation allowance			$ 7,900