Debt - Sale of Future Royalty Interest (Details)																													3 Months Ended
	Mar. 19, 2024 shares	Mar. 05, 2024 shares	Mar. 01, 2024 shares	Jan. 29, 2024 USD ($) $ / shares shares	Dec. 28, 2023 USD ($) shares	Sep. 29, 2023 USD ($) $ / shares shares	Jun. 28, 2023 USD ($) shares	May 08, 2023 USD ($) item $ / shares shares	Mar. 23, 2023 USD ($) shares	Mar. 17, 2023 USD ($) shares	Feb. 08, 2023 USD ($) shares	Nov. 18, 2022 USD ($) shares	Sep. 30, 2022 USD ($) shares	Aug. 24, 2022 USD ($)	Aug. 17, 2022 USD ($) $ / shares shares	Jul. 25, 2022 USD ($) shares	May 13, 2022 USD ($) shares	Apr. 14, 2022 USD ($)	Mar. 09, 2022 USD ($) shares	Mar. 04, 2022 USD ($) shares	Mar. 02, 2022 USD ($) shares	Feb. 11, 2022 USD ($) shares	Apr. 13, 2021 USD ($) shares	Mar. 08, 2021 USD ($)	Dec. 22, 2020 USD ($)	Nov. 13, 2020 USD ($)	Oct. 31, 2020 USD ($) $ / shares	Oct. 08, 2020 USD ($)	Mar. 31, 2024 USD ($) $ / shares shares	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($) shares	Aug. 14, 2023	Jun. 30, 2023 $ / shares shares	Nov. 01, 2020 $ / shares
Debt Instrument [Line Items]
Convertible preferred stock, shares issued (in shares) | shares																													99		178
Gain on extinguishment of debt																													$ 1,245,000
Term of warrant																																5 years
Minimum
Debt Instrument [Line Items]
Exercise price (in dollars per share) | $ / shares																													$ 0.24
Iliad
Debt Instrument [Line Items]
Royalties incurred									$ 227,000	$ 992,000		$ 715,000				$ 750,000	$ 400,000		$ 700,000	$ 800,000	$ 1,100,000	$ 2,400,000	$ 3,000,000.0
Issuance of common stock (In shares) | shares					4,875,000				3,733	14,533		978				31,546	15,249		24,667	26,667	32,333	23,117	7,843
Streeterville
Debt Instrument [Line Items]
Issuance of common stock (In shares) | shares	8,333,333	10,000,000
Series H convertible preferred stock
Debt Instrument [Line Items]
Convertible preferred stock, shares issued (in shares) | shares																													0		0
Series H convertible preferred stock | Streeterville
Debt Instrument [Line Items]
Royalty interest							$ 756,992
Series I convertible preferred stock
Debt Instrument [Line Items]
Convertible preferred stock, shares issued (in shares) | shares																													0		56
Issuance of common stock (In shares) | shares						118
Series J
Debt Instrument [Line Items]
Issuance of common stock (In shares) | shares			179
Beginning on March 2021
Debt Instrument [Line Items]
Shortfall restoration period																								30 days
October 2020 Purchase Agreement
Debt Instrument [Line Items]
Royalties paid																												$ 12,000,000.0
Aggregate purchase price																												$ 6,000,000.0
Percentage of net sales																												10.00%
Percentage of worldwide revenues																												10.00%
Royalty interest																												$ 12,000,000.0
Royalty discount																												$ 6,000,000.0
Royalty discount rate																							77.09%			45.42%		34.51%
Minimum volume weighted average price of stock | $ / shares																											$ 0.9105							$ 0.9105
Increase in royalty repayment amount																											$ 6,000,000.0
Additional royalty financings committed																										$ 6,000,000.0
Gain on extinguishment of debt																			$ (2,200,000)										$ (2,000,000.0)
October 2020 Purchase Agreement | Iliad
Debt Instrument [Line Items]
Principal amount																		$ 12,000,000.0
Fair value of notes																													6,700,000		$ 6,900,000
Net loss in the fair value																													(695,000)
October 2020 Purchase Agreement | Iliad | Minimum
Debt Instrument [Line Items]
Percentage of shares issued and outstanding																		4.99%
October 2020 Purchase Agreement | Beginning On April 2021
Debt Instrument [Line Items]
Minimum monthly royalty repayment amount																												$ 250,000
October 2020 Purchase Agreement | Beginning On October 2021
Debt Instrument [Line Items]
Minimum monthly royalty repayment amount																												400,000
October 2020 Purchase Agreement | Beginning On April 2022
Debt Instrument [Line Items]
Minimum monthly royalty repayment amount																												600,000
October 2020 Purchase Agreement | Beginning On October 2022
Debt Instrument [Line Items]
Minimum monthly royalty repayment amount																												$ 750,000
December 2020 Purchase Agreement
Debt Instrument [Line Items]
Aggregate purchase price																									$ 6,000,000.0
Percentage of net sales																									10.00%
Percentage of worldwide revenues																									10.00%
Minimum monthly royalty repayment amount																									$ 750,000
Royalty interest																									12,000,000.0
Royalty discount																									$ 6,000,000.0
Royalty discount rate																									23.70%
Royalties incurred											$ 675,000
Issuance of common stock (In shares) | shares											150,000
Gain on extinguishment of debt																													(2,700,000)
December 2020 Purchase Agreement | Iliad
Debt Instrument [Line Items]
Principal amount																		$ 12,000,000.0
December 2020 Purchase Agreement | Uptown Park Capital, LLC
Debt Instrument [Line Items]
Fair value of notes																													7,900,000		7,500,000
Net loss in the fair value																													(407,000)
December 2020 Purchase Agreement | Series H convertible preferred stock | Streeterville
Debt Instrument [Line Items]
Aggregate shares value							1,700,000
December 2020 Purchase Agreement | Series H convertible preferred stock | Uptown Park Capital, LLC
Debt Instrument [Line Items]
Aggregate shares value							757,000
December 2020 Purchase Agreement | Series I convertible preferred stock | Uptown Park Capital, LLC
Debt Instrument [Line Items]
Aggregate shares value						$ 1,500,000.00
March 2021 Purchase Agreement
Debt Instrument [Line Items]
Aggregate purchase price																								$ 5,000,000.0
Percentage of net sales																								10.00%
Percentage of worldwide revenues																								10.00%
Royalty discount rate																								19.36%
Threshold price																								$ 10,000,000.0
Percentage of royalties collected from licenses																								50.00%
Interest expense																													448,000	$ 420,000
Carrying value of notes																													0		4,600,000
March 2021 Purchase Agreement | Iliad
Debt Instrument [Line Items]
Principal amount																		$ 10,000,000.0
March 2021 Purchase Agreement | Streeterville
Debt Instrument [Line Items]
Aggregate purchase price															$ 3,400,000
Royalty interest													$ 2,000,000.0
Royalties incurred													$ 2,000,000.0
Issuance of common stock (In shares) | shares													156,863		153,333
Common stock, par value (in dollars per share) | $ / shares															$ 0.0001
March 2021 Purchase Agreement | Beginning on March 2021
Debt Instrument [Line Items]
Royalty interest																								$ 10,000,000.0
Royalty discount																								5,000,000.0
March 2021 Purchase Agreement | Beginning On April 2021
Debt Instrument [Line Items]
Minimum monthly royalty repayment amount																								$ 250,000
Increase in royalty repayment, percent																								5.00%
March 2021 Purchase Agreement | Beginning On October 2021
Debt Instrument [Line Items]
Minimum monthly royalty repayment amount																								$ 400,000
March 2021 Purchase Agreement | Beginning On April 2022
Debt Instrument [Line Items]
Increase in royalty repayment, percent																								10.00%
Royalty instrument, Debt instrument carrying value																								$ 600,000
March 2021 Purchase Agreement | Beginning On October 2022
Debt Instrument [Line Items]
Minimum monthly royalty repayment amount																								$ 750,000
August 2022 Purchase Agreement
Debt Instrument [Line Items]
Gain on extinguishment of debt																													(1,000,000.0)
Fair value																													7,100,000		$ 6,800,000
August 2022 Purchase Agreement | Streeterville
Debt Instrument [Line Items]
Aggregate purchase price														$ 4,000,000.0
Percentage of net sales														10.00%
Percentage of worldwide revenues														10.00%
Royalty interest														$ 12,000,000.0
Royalty discount rate														55.97%
Issuance of common stock (In shares) | shares				1,587,632
Aggregate shares value				$ 165,000
Percentage of royalties collected from licenses														50.00%
Common stock, par value (in dollars per share) | $ / shares				$ 0.0001
August 2022 Purchase Agreement | Until One Year Anniversary | Streeterville
Debt Instrument [Line Items]
Accrued interest rate on royalty														5.00%
August 2022 Purchase Agreement | After One Year Anniversary | Streeterville
Debt Instrument [Line Items]
Accrued interest rate on royalty														10.00%
August 2022 Purchase Agreement | Beginning On September 2022 | Streeterville
Debt Instrument [Line Items]
Minimum monthly royalty repayment amount														$ 250,000
August 2022 Purchase Agreement | Beginning On March 2023 | Streeterville
Debt Instrument [Line Items]
Minimum monthly royalty repayment amount														400,000
August 2022 Purchase Agreement | Beginning On September 2023 | Streeterville
Debt Instrument [Line Items]
Minimum monthly royalty repayment amount														600,000
August 2022 Purchase Agreement | Beginning On March 2024 | Streeterville
Debt Instrument [Line Items]
Minimum monthly royalty repayment amount														$ 750,000
Standstill Agreement
Debt Instrument [Line Items]
Number of royalty interests issued | item								4
Agreement term								6 months
Exercise price (in dollars per share) | $ / shares								$ 0.48
Standstill Agreement | Streeterville Warrants
Debt Instrument [Line Items]
Warrants to purchase shares of Common stock | shares								1,892,808
Standstill Agreement | Iliad Warrants [Member]
Debt Instrument [Line Items]
Warrants to purchase shares of Common stock | shares								826,738																									1,711,954
Standstill Agreement | Uptown warrants
Debt Instrument [Line Items]
Warrants to purchase shares of Common stock | shares								1,097,756																									2,105,348
Standstill Agreement | Standstill Warrants [Member]
Debt Instrument [Line Items]
Exercise price (in dollars per share) | $ / shares								$ 0.48																									$ 0.48
Term of warrant								5 years
Standstill Agreement | Series H convertible preferred stock | Streeterville
Debt Instrument [Line Items]
Royalty interest							$ 1,726,888
Number of shares to be exchanged | shares							105
Global Amendment No 2 to Royalty Interest October 2020 Purchase Agreement | Iliad
Debt Instrument [Line Items]
Warrants to purchase shares of Common stock | shares						232,500
Exercise price (in dollars per share) | $ / shares						$ 0.37
Threshold monthly royalty payment payable						$ 750,000.00
Term of warrant						5 years
Global Amendment No 2 to Royalty Interest October 2020 Purchase Agreement | Streeterville Warrants
Debt Instrument [Line Items]
Net loss in the fair value																													$ (468,000)
Global Amendment No 2 to Royalty Interest December, 2020 Purchase Agreement | Uptown Park Capital, LLC
Debt Instrument [Line Items]
Warrants to purchase shares of Common stock | shares						262,500
Exercise price (in dollars per share) | $ / shares						$ 0.37
Threshold monthly royalty payment payable						$ 750,000.00
Term of warrant						5 years
Global Amendment No 2 to Royalty Interest August, 2022 Purchase Agreement | Streeterville
Debt Instrument [Line Items]
Warrants to purchase shares of Common stock | shares						255,000
Exercise price (in dollars per share) | $ / shares						$ 0.37
Threshold monthly royalty payment payable						$ 750,000.00
Term of warrant						5 years
October 2020 royalty interest agreements | Iliad
Debt Instrument [Line Items]
Issuance of common stock (In shares) | shares				8,000,000
Aggregate shares value				$ 836,000.00	$ 789,000
Royalty Interest Exchange Agreement December 2020 [Member]
Debt Instrument [Line Items]
Number of shares to be exchanged | shares								1,908,651
Partitioned Royalty								$ 1,073,807