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Shareholders' Equity and Share Based Compensation - Summary Of Stock Option (Detail) - Stock Option [Member] $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Sep. 30, 2021 $ / shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Options, Beginning balance | shares	3,067,322
Number of Options, Granted | shares	220,300
Number of Options, Exercised | shares	(177,000)
Number of Options, Ending balance | shares	3,110,622	3,067,322
Number of Options, Exercisable | shares	2,069,329
Weighted Average Exercise Price, Beginning balance | $ / shares	$ 6.91
Weighted Average Exercise Price, Granted | $ / shares	12.17
Weighted Average Exercise Price, Exercised | $ / shares	1.34
Weighted Average Exercise Price, Ending balance | $ / shares	$ 7.60	$ 6.91
Weighted Average Exercise Price, Exercisable | $ / shares			$ 6.19
Weighted Average Remaining Contractual Term (years)	6 years 4 months 9 days	6 years 9 months 25 days
Weighted Average Remaining Contractual Term (years), Granted	9 years 5 months 26 days
Weighted Average Remaining Contractual Term (years), Exercised	1 year 1 month 20 days
Weighted Average Remaining Contractual Term (years), Exercisable	5 years 1 month 28 days
Aggregate Intrinsic Value, Ending balance | $	$ 13,035	$ 20,051
Aggregate Intrinsic Value, Excercisable | $	$ 11,305

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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