Income Taxes - Significant Components of the Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Loss Carryforwards [Line Items]
(Loss) income before income tax (benefit) expense	$ (14,056)	$ 3,645	$ 3,824
Current:
Federal	(434)	(303)	(448)
State	273	290	126
Total current benefit	(161)	(13)	(322)
Deferred:
Federal	(12,856)	(3,409)	1,070
State	(5,211)	(939)	321
Foreign	0	0	115
Total deferred (benefit) expense provision	(18,067)	(4,348)	1,506
Total tax (benefit) expense provision	(18,228)	(4,361)	1,184
Domestic
Operating Loss Carryforwards [Line Items]
(Loss) income before income tax (benefit) expense	(6,954)	7,053	6,126
Foreign
Operating Loss Carryforwards [Line Items]
(Loss) income before income tax (benefit) expense	$ (7,102)	$ (3,408)	$ (2,302)