Stockholders' Equity and Stock-based Compensation Expense - Activity Of Options Outstanding Under the 2019 Plans (Details) - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Shares Available for Grant
Beginning balance (in shares)	947,347
Options granted (in shares)	(207,062)
Stock awards canceled (in shares)	22,568
Options canceled / forfeited / expired (in shares)	(2,072)
Ending balance (in shares)	578,506	947,347
Number of Stock Options Outstanding
Beginning balance (in shares)	287,175
Options granted (in shares)	207,062
Options exercised (in shares)	(7,459)
Options canceled / forfeited / expired (in shares)	(2,072)
Ending balance (in shares)	484,706	287,175
Weighted- Average Exercise Price
Beginning balance (in dollars per share)	$ 25.89
Granted (in dollars per share)	35.34
Options exercised (in dollars per share)	20.24
Options canceled / forfeited / expired (in dollars per share)	32.87
Ending balance (in dollars per share)	$ 29.99	$ 25.89
Weighted Average Remaining Term (in Years)
Weighted average remaining term (in years)	6 years 10 months 17 days	4 years 11 months 1 day
RSUs
Shares Available for Grant
Awards granted (in shares)	(95,761)
PSUs
Shares Available for Grant
Awards granted (in shares)	(90,658)