Stock Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended			6 Months Ended
	Oct. 31, 2020	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Apr. 30, 2021
Share Based Payment Arrangement [Line Items]
Share based compensation arrangement by share based payment award, Options exercised in period, Total intrinsic value		$ 100			$ 400
Stock-based compensation expense		2,025	$ 713		3,687	$ 1,117
Unvested Stock Options [Member]
Share Based Payment Arrangement [Line Items]
Share based compensation, Nonvested awards, Compensation cost not yet recognized Stock options and equity instruments other than options		$ 19,000			$ 19,000
Employee Stock Purchase Plan ESPP [Member]
Share Based Payment Arrangement [Line Items]
Common stock capital, Shares reserved for future issuance								429,934
2021 Equity Incentive Plan [Member]
Share Based Payment Arrangement [Line Items]
Common stock capital, Shares reserved for future issuance								3,260,753
Share-based compensation arrangement by share-based payment award, Number of shares available for issuance		1,534,962			1,534,962
2017 and 2021 Amended Equity Incentive Plan [Member]
Share Based Payment Arrangement [Line Items]
Share based compensation arrangement by share based payment award, Options granted in period, Weighted average grant date fair value		$ 11.03			$ 12.98
2017 and 2021 Amended Equity Incentive Plan [Member] | Unvested Stock Options [Member]
Share Based Payment Arrangement [Line Items]
Share based compensation, Nonvested awards, Compensation cost not yet recognized period of recognition stock options and equity instruments other than options					2 years 9 months 3 days
2017 and 2021 Amended Equity Incentive Plan [Member] | Unvested Stock Options And Restricted Stock Unit [Member]
Share Based Payment Arrangement [Line Items]
Share based compensation, Nonvested awards, Compensation cost not yet recognized Stock options and equity instruments other than options		$ 1,100			$ 1,100
Restricted Stock [Member]
Share Based Payment Arrangement [Line Items]
Weighted average Grant date fair value		$ 21.62			$ 21.62		$ 23.99
Restricted Stock [Member] | Unvested Stock Options And Restricted Stock Unit [Member]
Share Based Payment Arrangement [Line Items]
Share based compensation, Nonvested awards, Compensation cost not yet recognized period of recognition stock options and equity instruments other than options					1 year 5 months 12 days
Restricted Stock [Member] | 2017 and 2021 Amended Equity Incentive Plan [Member]
Share Based Payment Arrangement [Line Items]
Share based compensation arrangement by share based payment award, Vesting period	1 year
Weighted average Grant date fair value	$ 6.37
Stock-based compensation expense					$ 0	$ 200
ESPP [Member]
Share Based Payment Arrangement [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock Percent of Fair Market Value					85.00%
Share purchases funded through payroll deductions for employee's eligible minimum annual compensation, percentage					1.00%
Share purchases funded through payroll deductions for employee's eligible maximum annual compensation, percentage		15.00%			15.00%
Potential increase in shares reserved for future issuance (in shares)					440,502
Potential increase in shares reserved for future issuance as percentage of outstanding share					1.00%
Number of shares issued under share-based payment arrangement					8,458
Restricted Stock Units (RSUs) [Member] | 2017 and 2021 Amended Equity Incentive Plan [Member]
Share Based Payment Arrangement [Line Items]
Stock-based compensation expense					$ 500
Common Class A [Member]
Share Based Payment Arrangement [Line Items]
Number of options, Granted			32,122	113,683
Common Class A [Member] | Restricted Stock [Member]
Share Based Payment Arrangement [Line Items]
Share based compensation arrangement by share based payment award, Restricted shares of fully issued and outstanding common stock	49,636