Common Stock (Details) - USD ($)	1 Months Ended	12 Months Ended
	Feb. 29, 2020	Dec. 31, 2020	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	May 31, 2021	Mar. 31, 2021
Class of Stock [Line Items]
Common stock authorized (in shares)			227,812,500	227,812,500		151,875,000
Common stock issued (in shares)			91,814,665	91,645,369
Value of shares of common stock issued			$ 918,000	$ 916,000
Aspire Capital Fund, LLC
Class of Stock [Line Items]
Stock purchase program price, period	30 months
Proceeds of aspire capital agreement, net of issuance costs	$ 3,000,000
Common stock issued (in shares)	2,693,965
Additional shares authorized under the plan (in shares)		4,650,000
Value of shares of common stock issued		$ 5,400,000
Common Stock
Class of Stock [Line Items]
Common stock authorized							$ 100,000,000
Compensation fee					3.00%
Common Stock | Aspire Capital Fund, LLC
Class of Stock [Line Items]
Authorized amount of stock repurchase	$ 30,000,000
Commitment fee (in shares)		646,551
Sale of stock remaining authorized amount			$ 21,600,000	$ 21,600,000
Stock purchase program, authorized per day (in shares)			150,000
Stock purchase program, authorized per day, after mutual agreement (in shares)			2,000,000