Stockholders' Equity - Transactions with Oasis Capital and Underwritten Public Offering (Details) - USD ($)					1 Months Ended		2 Months Ended	12 Months Ended
	Feb. 02, 2022	Dec. 10, 2021	Apr. 29, 2021	Jan. 13, 2021	Apr. 30, 2020	Mar. 31, 2020	Feb. 28, 2021	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2022	Sep. 29, 2022	Feb. 17, 2022	Dec. 31, 2020
Stockholders' equity								$ (1,356,000)	$ 11,853,000				$ 17,202,000
Total shares authorized								352,475,074
Preferred Stock, Shares Authorized								5,496,239	5,496,239
Minimum
Share Price												$ 1.00
Registered Direct Offering
Number of shares offered			33,987
Gross proceeds from the issuance of common stock			$ 10,800,000
Share Price			$ 317.25
Issuance costs			$ 948,000					$ 2,550,000	$ 2,550,000
At The Market Offering
Amount of shares issued								20,462,000	8,595,000
Issuance costs								$ 103,000	465,000
October 2020 ATM Agreement
Issuance of common stock (In shares)							8,931
Issuance costs							$ 311,000
Sale of worth of shares							$ 5,400,000
December 2021 ATM Agreement
Proceeds from Issuance of Common Stock									$ 20,500,000
Issuance of common stock (In shares)									923,164
December 2021 ATM Agreement | Maximum
Number of shares offered		15,000,000.0
Amount of shares issued	$ 75,000,000.0
December 2021 ATM Agreement | Minimum
Amount of shares issued	$ 15,000,000.0
Series E perpetual preferred stock
Preferred Stock, Shares Authorized								4,475,074	4,475,074
Common Stock
Share Price								$ 6.52
Common Stock | Common stock - voting
Common stock, shares authorized								298,000,000	298,000,000	298,000,000	150,000,000
Common Stock | Common stock - voting | At The Market Offering
Issuance of common stock (In shares)								923,164	39,086
Common Stock | Common stock - non-voting
Common stock, shares authorized								50,000,000	50,000,000
Securities Purchase Agreement | Registered Direct Offering
Issuance of common stock (In shares)				19,724
Share Price				$ 760.50
Net proceeds				$ 1,600,000
Proceeds from issuance of warrants				$ 15,000,000.0
Equity Line of Credit
Proceeds from Issuance of Common Stock					$ 23,000
Issuance of common stock (In shares)					231
Term of equity purchase agreement						36 months
Equity Line of Credit | Maximum
Aggregate amount of equity purchase agreement						$ 2,000,000.0