Stock Based Compensation - Omnibus Incentive Plan (Details) - Omnibus Plan - Stock Options - $ / shares		9 Months Ended	12 Months Ended
	May 27, 2021	Sep. 30, 2021	Dec. 31, 2020
Stock based compensation
Number of additional shares authorized	1,000,000
Number of shares available for grant	2,200,000	970,832
Stock options granted (in shares)		115,659
Non-qualified stock options granted (in shares)		0	0
Number of shares
Balance at beginning of year (in shares)		706,372
Granted (in shares)		115,659
Exercised (in shares)		(10,513)
Forfeited (in shares)		(19,381)
Balance at end of year (in shares)		792,137	706,372
Options: Options vested and exercisable		676,478
Options: Options vested and expected to vest		792,137
Weighted-Average Exercise Price
Balance at beginning of year (in dollars per share)		$ 15.20
Granted (in dollars per share)		29.62
Exercised (in dollars per share)		5.25
Forfeited (in dollars per share)		23.03
Balance at end of year (in dollars per share)		17.35	$ 15.20
Weighted-Average Exercise Price: Options vested and exercisable		15.25
Weighted-Average Exercise Price: Options vested and expected to vest		$ 17.35
Weighted- Average Remaining Contractual Term (in Years)
Balance (in years)		5 years 7 months 24 days	6 years 5 months 8 days
Granted (in years)		6 years 11 months 23 days
Weighted-Average Remaining Contractual Term (in Years): Options vested and exercisable		5 years 5 months 1 day
Weighted-Average Remaining Contractual Term (in Years): Options vested and expected to vest		5 years 7 months 24 days
Number of unvested options scheduled to vest
Non-Vested Options as of beginning of period		45,319
Granted (in shares)		115,659
Vested (in shares)		(45,319)
Non-Vested Options as of end of period		115,659	45,319
Weighted-Average Grant Date Fair Value
Non-Vested, beginning balance		$ 1.10
Granted: Weighted-Average Grant Date Fair Value		17.43
Vested: Weighted-Average Grant Date Fair Value		1.10
Non-Vested, ending balance		$ 17.43	$ 1.10
Valuation Assumptions:
Expected term in years		4 years 3 months 18 days
Volatility (as a percent)		78.60%
Risk-free interest rate		0.70%
Granted: Weighted-Average Grant Date Fair Value		$ 17.43
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		7 years
2021
Number of unvested options scheduled to vest
Non-Vested Options as of end of period		115,659