Equity and Stock-Based Compensation (Issuance Activity Under the SEDA) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended		15 Months Ended	17 Months Ended	20 Months Ended
	Apr. 21, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2022	Sep. 30, 2022
Private Placement, Shares Sold \| Lincoln Park
Class of Stock [Line Items]
Common shares issued/sold (in shares)		0	0	0	766,000
Private Placement, Additional Commitment Shares \| Lincoln Park
Class of Stock [Line Items]
Common shares issued/sold (in shares)		0	0	0	15,000
Private Placement \| Lincoln Park
Class of Stock [Line Items]
Common shares issued/sold (in shares)	15,000	0	0	0	781,000		766,000
Proceeds received		$ 0	$ 0	$ 0	$ 4,217		$ 4,200
Private Placement \| YA
Class of Stock [Line Items]
Common shares issued/sold (in shares)		0	0	0	1,700,000			1,700,000
Proceeds received		$ 0	$ 0	$ 0	$ 10,000			$ 10,000
July 2021 Equity Distribution Agreements
Class of Stock [Line Items]
Common shares issued/sold (in shares)		0	4,183,000	0	4,183,000	4,700,000
Gross proceeds received		$ 0	$ 21,363	$ 0	$ 21,363	$ 24,000
Commissions		0	214	0	214
Proceeds received		$ 0	$ 21,149	$ 0	$ 21,149