Stock-Based Compensation (Summary of Stock Option Activity) (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) $ / shares shares
Number of Options
Outstanding as of Beginning of period (in shares)	2,749,441
Granted (in shares)	632,988
Cancelled / Forfeited (in shares)	(3,836)
Exercised (in shares)	(87,634)
Balance as of End of period (in shares)	3,290,959
Options exercisable as of December 31, 2021 (in shares)	1,167,639
Weighted Average Exercise Price
Outstanding as of Beginning of period (in dollars per share) | $ / shares	$ 7.93
Granted (in dollars per share) | $ / shares	8.85
Cancelled / Forfeited (in dollars per share) | $ / shares	12.55
Exercised (in dollars per share) | $ / shares	0.54
Balance as of End of period (in dollars per share) | $ / shares	8.29
Options exercisable as of December 31, 2021 (in dollars per share) | $ / shares	$ 3.24
Aggregate Intrinsic Value
Aggregate intrinsic value | $	$ 4,238
Options exercisable as of December 31, 2020 | $	$ 3,441
Weighted average remaining contractual term, outstanding (in years)	8 years 3 months 18 days
Weighted average remaining contractual life, exercisable (in years)	6 years 10 months 24 days
Options to purchase common stock
Number of Options
Balance as of End of period (in shares)	9,993