Stockholders' Equity - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Aug. 31, 2019
Class of Stock [Line Items]
Stock issued during period (in shares)			441,410
Stock issued during period			$ 2.5
Accumulated deficit subject to restriction	$ 10.5	$ 10.0
Accumulated profits (at least)	10.00%	10.00%
Vendor
Class of Stock [Line Items]
Common stock reserved for future issuance (in shares)				103,734
Common stock, capital shares reserved for future issuance				$ 4.5
Employee stock options
Class of Stock [Line Items]
Common stock reserved for future issuance (in shares)	6,356,982
Employee stock purchase plan
Class of Stock [Line Items]
Common stock reserved for future issuance (in shares)	0