Stock-Based Compensation - Summary of Remaining Unrecognized Share-based Compensation Expense Related to Outstanding Share-based Awards (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Service-based Awards [Member]
Stock Based Compensation [Line Items]
Remaining unrecognized share-based compensation expense	$ 1,425
Share based compensation arrangement by share based payment award options weighted average life in years	1 year 4 months 24 days
Performance-based Awards [Member]
Stock Based Compensation [Line Items]
Remaining unrecognized share-based compensation expense	$ 446
Share based compensation arrangement by share based payment award options weighted average life in years	1 year 9 months 18 days