Fair Value Measurements - Summary of Carrying Amount and Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands		Jun. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount		$ 24,550
Term Loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount	[1]	24,550	$ 24,401
Estimated Fair Value	[1]	$ 25,706	$ 25,332

[1] Carrying amounts of long-term debt were net of unamortized debt discounts of $450 and $599 as of June 30, 2021 and December 31, 2020, respectively