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Stock-Based Compensation - Additional Information (Detail) - USD ($)	12 Months Ended			151 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2023	Jun. 06, 2011
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance	9,513,685			9,513,685
Unrecognized compensation expense related to stock options	$ 0			$ 0
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense	$ 6,900,000			6,900,000
Unrecognized stock-based compensation expense, weighted average period of recognition	2 years 7 months 6 days
Granted	411,635
Grant fair value	$ 6.79
Repurchase of common stock (in shares)	110,753	67,723	82,351
Performance Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense	$ 0			$ 0
2011 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance					400,000
Number of shares available for grant					859,956
Increase in shares of common stock authorized for issuance				4,400,000
2007 Plan and 2010 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for grant					459,956