Subsequent Events (Details) $ / shares in Units, $ in Thousands	1 Months Ended	9 Months Ended		12 Months Ended
	Oct. 31, 2021 USD ($) employees $ / shares shares	Sep. 30, 2021 USD ($) $ / shares shares	Sep. 30, 2020 USD ($)	Dec. 31, 2020
Subsequent Event [Line Items]
Options granted (in shares) | shares		0
Granted (in dollars per share) | $ / shares		$ 0
Payments on capital lease obligations | $		$ 319	$ 285
Line of credit
Subsequent Event [Line Items]
Floor rate		3.25%		3.75%
Line of credit | Prime Rate
Subsequent Event [Line Items]
Basis spread on variable rate		0.25%
Subsequent Event
Subsequent Event [Line Items]
Options granted (in shares) | shares	430,000
Number of non-employee directors and employees | employees	24
Granted (in dollars per share) | $ / shares	$ 18.80
Payments on capital lease obligations | $	$ 300
Subsequent Event | Line of credit
Subsequent Event [Line Items]
Floor rate	3.25%
Subsequent Event | Line of credit | Prime Rate
Subsequent Event [Line Items]
Basis spread on variable rate	0.25%