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Stockholders Deficit - Common Stock (Details) - USD ($) $ / shares in Units, $ in Millions									1 Months Ended			3 Months Ended		9 Months Ended	12 Months Ended
	Aug. 22, 2022	Jul. 06, 2022	Apr. 27, 2022	Apr. 25, 2022	Apr. 04, 2022	Mar. 15, 2022	Mar. 14, 2022	Jan. 10, 2022	Jul. 31, 2022	Oct. 31, 2021	Mar. 31, 2021	Mar. 31, 2023	Mar. 31, 2022	Sep. 30, 2022	Dec. 31, 2022	Apr. 12, 2023	Apr. 14, 2022	Oct. 02, 2020
Sale of stock
Issuance of common stock (in shares)		150,366
Common stock that can be purchased with warrants (in shares)										6,666			24,856
Stock stated value												$ 0.0001			$ 0.0001
Maximum
Sale of stock
Proceeds from issuance of common stock in public offering, net of offering costs	$ 75.0
Common stock
Sale of stock
Conversion of stock shares converted						6,025
Conversion of convertible preferred stock (in shares)					6,025								6,063,000
Series A-1 warrants
Sale of stock
Warrant Exercisable Term		5 years
Series A-2 warrants
Sale of stock
Exercisable term		13 months
Series B Warrants
Sale of stock
Issuance of common stock (in shares)					2,425
Warrants and rights outstanding, term							5 years
2020 Shelf Registration Statement
Sale of stock
Aggregate amount of securities issuable																		$ 200.0
2022 Preferred Stock Offering
Sale of stock
Common stock that can be purchased with warrants (in shares)							606
Proceeds from issuance of common stock in public offering, net of offering costs							$ 4.1
Exercise price of warrants (in dollars per share)							$ 500.00
Conversion price							$ 400.00
Preferred Stock, convertible, shares issuable							12,125
Exercisable term							6 months
Stock stated value							$ 1,000
Duration From Offering To Anniversary Of Closing				180 days
2022 Preferred Stock Offering \| Series A Warrants
Sale of stock
Common stock that can be purchased with warrants (in shares)				4,243			12,125
Exercise price of warrants (in dollars per share)																	$ 520.00
Exercisable term							6 months
Warrants and rights outstanding, term							5 years
Warrant Exercisable Term				5 years
2022 Preferred Stock Offering \| Series B Warrants
Sale of stock
Common stock that can be purchased with warrants (in shares)							12,125
Exercisable term							6 months
Warrants and rights outstanding, term							1 year 6 months
At-the-market sales \| Common stock
Sale of stock
Issuance of common stock (in shares)												72,699	512,000
Proceeds from issuance of common stock in public offering, net of offering costs															$ 9.3
At-the-market sales \| Common stock \| Maximum
Sale of stock
Commission percentage			3.00%								3.00%
Authorized value for shares issuance			$ 12.8								$ 50.0
Public offering
Sale of stock
Issuance of common stock (in shares)		382,966							150,366
Common stock that can be purchased with warrants (in shares)		150,366							765,933	6,666
Share price (in dollars per share)									$ 45.00
Public offering \| Common stock
Sale of stock
Issuance of common stock (in shares)		22,000,000.0							382,966	13,333
Common stock that can be purchased with one-half of warrant (in shares)										1
Share price (in dollars per share)									$ 45.00	$ 1,700
Proceeds from issuance of common stock in public offering, net of offering costs									$ 22.0	$ 21.1
Public offering \| Pre-funded warrants
Sale of stock
Common stock that can be purchased with warrants (in shares)									150,366
Public offering \| Warrants
Sale of stock
Common stock that can be purchased with warrants (in shares)									300,733
2022 ATM
Sale of stock
Issuance of common stock (in shares)												72,698		173,750	78,852
Proceeds from issuance of common stock in public offering, net of offering costs												$ 1.0		$ 12.2	$ 0.9
2022 ATM \| Subsequent Event
Sale of stock
Eligible Amount Authorized To Sell																$ 4.5
2022 ATM \| Common stock
Sale of stock
Issuance of common stock (in shares)											3,457		512
Proceeds from issuance of common stock in public offering, net of offering costs												$ 0.3
2022 ATM \| Common stock \| Maximum
Sale of stock
Commission percentage								3.00%
Authorized value for shares issuance								$ 50.0
2022 ATM \| New Warrant [Member]
Sale of stock
Warrant Exercisable Term				6 months
H.C. Wainwright & Co., LLC, Sales Agent [Member]
Sale of stock
Common stock that can be purchased with warrants (in shares)		26,666
Commission percentage		7.00%
Exercise price of warrants (in dollars per share)		$ 56.25
Series A Preferred Stock
Sale of stock
Conversion of stock shares converted						2,425
Series A Preferred Stock \| 2022 Preferred Stock Offering
Sale of stock
Issuance of common stock (in shares)							2,425
Exercise price of warrants (in dollars per share)				$ 520
Series B Preferred Stock \| 2022 Preferred Stock Offering
Sale of stock
Issuance of common stock (in shares)							2,425
Exercise price of warrants (in dollars per share)																	$ 520.00