Debt - Sale of Future Royalty Interest (Details)																											1 Months Ended	3 Months Ended		6 Months Ended	9 Months Ended		11 Months Ended
	Sep. 30, 2025 USD ($) $ / shares shares	May 14, 2025 USD ($) shares	May 13, 2025 USD ($) shares	Apr. 30, 2025 USD ($) shares	Feb. 14, 2025 USD ($) shares	Jan. 28, 2025 USD ($) shares	Jul. 18, 2024 USD ($) shares	Jul. 15, 2024 USD ($)	Jun. 07, 2024 USD ($) shares	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 ($) shares	Aug. 24, 2022 USD ($)	Mar. 08, 2021 USD ($)	Dec. 22, 2020 USD ($)	Nov. 13, 2020 USD ($)	Oct. 31, 2020 USD ($) $ / shares	Oct. 08, 2020 USD ($)	Sep. 30, 2022 USD ($) $ / shares shares	Sep. 30, 2025 USD ($) $ / shares shares	Sep. 30, 2024 USD ($) $ / shares	Nov. 18, 2022 USD ($) shares	Sep. 30, 2025 USD ($) $ / shares shares	Sep. 30, 2024 USD ($) $ / shares	Mar. 09, 2022 USD ($) shares	Dec. 31, 2024 USD ($) shares	Aug. 14, 2023	Jun. 30, 2023 $ / shares shares	Apr. 14, 2022 USD ($)	Nov. 01, 2020 $ / shares
Debt Instrument [Line Items]
Percentage of net sales																										10.00%
Percentage of worldwide revenues																										10.00%
Convertible preferred stock, shares issued (in shares) | shares	1,332																											1,332			1,332			99
Royalties incurred																												$ 39,000			$ 117,000
Gain (loss) on extinguishment of debt																															(1,822,000)	$ 1,245,000
Term of warrant																																			5 years
Notes payable	$ 30,756,000																											$ 30,756,000			$ 30,756,000			$ 35,541,000
Minimum
Debt Instrument [Line Items]
Exercise price (in dollars per share) | $ / shares	$ 5																											$ 5	$ 5		$ 5	$ 5
Iliad
Debt Instrument [Line Items]
Royalties incurred																		$ 227,000	$ 992,000											$ 1,900,000
Issuance of common stock (in shares) | shares														3,250				2	10											80
Net change in the fair value																												$ 79,000	$ 1,300,000		$ 4,100,000	$ 2,900,000
Streeterville
Debt Instrument [Line Items]
Issuance of common stock (in shares) | shares	286,532				14,000					5,556	6,667
Aggregate shares value	$ 600,000,000				$ 291,375,000
Royalty Interest Global Amendment Warrants
Debt Instrument [Line Items]
Exercise price (in dollars per share) | $ / shares															$ 555
Term of warrant															5 years
Streeterville Warrants | Royalty Interest Global Amendment Warrants
Debt Instrument [Line Items]
Warrants to purchase shares of Common stock | shares															175
Exercise price (in dollars per share) | $ / shares															$ 555
Iliad Warrants [Member] | Royalty Interest Global Amendment Warrants
Debt Instrument [Line Items]
Warrants to purchase shares of Common stock | shares															155
Uptown warrants | Royalty Interest Global Amendment Warrants
Debt Instrument [Line Items]
Warrants to purchase shares of Common stock | shares															4,375
Series H convertible preferred stock
Debt Instrument [Line Items]
Convertible preferred stock, shares issued (in shares) | shares	0																											0			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																											0			0			0
Issuance of common stock (in shares) | shares															118
Series J
Debt Instrument [Line Items]
Convertible preferred stock, shares issued (in shares) | shares	0																											0			0			99
Issuance of common stock (in shares) | shares												179
Series L Preferred Stock
Debt Instrument [Line Items]
Convertible preferred stock, shares issued (in shares) | shares	121																											121			121
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
Aggregate purchase price																										6,000,000
Royalty interest																										12,000,000
Royalty discount																										$ 6,000,000
Royalty discount rate																								45.42%		34.51%
Minimum volume weighted average price of stock | $ / shares																									$ 0.9105													$ 0.9105
Increase in royalty repayment amount																									$ 6,000,000
Additional royalty financings committed																								$ 6,000,000
Royalties incurred																																	$ 8,000,000
Royalty expense first and last exchange period description																															from February 11, 2022 to March 9, 2022
Issuance of common stock (in shares) | shares																																	76
Gain (loss) on extinguishment of debt																															$ 2,000,000		$ (2,200,000)
Principal amount																																					$ 12,000,000
October 2020 Purchase Agreement | Iliad
Debt Instrument [Line Items]
Fair value of notes	$ 1,100,000																											$ 1,100,000			1,100,000			$ 5,200,000
October 2020 Purchase Agreement | Series L Preferred Stock | Iliad
Debt Instrument [Line Items]
Aggregate shares value		$ 550,000
October 2020 Purchase Agreement | Series L Preferred Stock | Streeterville
Debt Instrument [Line Items]
Aggregate shares value		$ 550,000
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
Percentage of net sales																							10.00%
Percentage of worldwide revenues																							10.00%
Minimum monthly royalty repayment amount																							$ 750,000
Royalty interest																							12,000,000
Royalty discount																							$ 6,000,000
Royalty discount rate																							23.70%
Royalties incurred																				$ 675,000
Issuance of common stock (in shares) | shares																				100
Gain (loss) on extinguishment of debt																															2,700,000
December 2020 Purchase Agreement | Iliad
Debt Instrument [Line Items]
Principal amount																																					12,000,000
December 2020 Purchase Agreement | Uptown Park Capital, LLC
Debt Instrument [Line Items]
Fair value of notes	10,800,000																											10,800,000			10,800,000			9,600,000
Net change in the fair value																												770,000	619,000		1,200,000	1,400,000
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
March 2021 Purchase Agreement
Debt Instrument [Line Items]
Aggregate purchase price																						$ 5,000,000
Percentage of net sales																						10.00%
Percentage of worldwide revenues																						10.00%
Royalty discount rate																						19.36%
Threshold price																						$ 10,000,000
Percentage of royalties collected from licenses																						50.00%
Interest expense																												0	0		0	448,000
Carrying value of notes	0																											0			0			0
March 2021 Purchase Agreement | Iliad
Debt Instrument [Line Items]
Principal amount																																					$ 10,000,000
March 2021 Purchase Agreement | Streeterville
Debt Instrument [Line Items]
Royalties incurred																											$ 5,400,000
Issuance of common stock (in shares) | shares																											207
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
Royalty discount																						5,000,000
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 (loss) on extinguishment of debt																															1,000,000
Fair value	$ 8,100,000																											8,100,000			8,100,000			$ 8,700,000
August 2022 Purchase Agreement | Streeterville
Debt Instrument [Line Items]
Aggregate purchase price																					$ 4,000,000
Percentage of net sales																					10.00%
Percentage of worldwide revenues																					10.00%
Royalty interest																					$ 12,000,000
Royalty discount rate																					55.97%
Issuance of common stock (in shares) | shares													1,058
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																	$ 720
Standstill Agreement | Streeterville Warrants
Debt Instrument [Line Items]
Warrants to purchase shares of Common stock | shares																	1,262																			0
Standstill Agreement | Iliad Warrants [Member]
Debt Instrument [Line Items]
Warrants to purchase shares of Common stock | shares																	551																			1,141
Standstill Agreement | Uptown warrants
Debt Instrument [Line Items]
Warrants to purchase shares of Common stock | shares																	492																			1,404
Standstill Agreement | Standstill Warrants [Member]
Debt Instrument [Line Items]
Exercise price (in dollars per share) | $ / shares																	$ 720																			$ 720
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															155
Exercise price (in dollars per share) | $ / shares															$ 555
Threshold monthly royalty payment payable															$ 750,000
Term of warrant															5 years
Global Amendment No 2 to Royalty Interest October 2020 Purchase Agreement | Streeterville Warrants
Debt Instrument [Line Items]
Net change in the fair value																												$ 829,000	$ 555,000		$ 561,000	$ 1,300,000
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															175
Exercise price (in dollars per share) | $ / shares															$ 555
Threshold monthly royalty payment payable															$ 750,000
Term of warrant															5 years
Global Amendment No 2 to Royalty Interest August, 2022 Purchase Agreement | Streeterville
Debt Instrument [Line Items]
Threshold monthly royalty payment payable															$ 750,000
October 2020 royalty interest agreements
Debt Instrument [Line Items]
Issuance of common stock (in shares) | shares									262
Notes payable									$ 1,500,000
October 2020 royalty interest agreements | Iliad
Debt Instrument [Line Items]
Issuance of common stock (in shares) | shares			60,000	57,500			8,000						5,333
Aggregate shares value			$ 466,200	$ 632,500			$ 819,000	$ 1,900,000					$ 836,000	$ 789,000
October 2020 royalty interest agreements | Series L Preferred Stock | Iliad
Debt Instrument [Line Items]
Issuance of common stock (in shares) | shares		22
Aggregate shares value		$ 550,000
Uptown Exchange Agreement | Uptown
Debt Instrument [Line Items]
Issuance of common stock (in shares) | shares						51,600
Aggregate shares value						$ 1,100,000
Royalty Interest Exchange Agreement December 2020 [Member]
Debt Instrument [Line Items]
Number of shares to be exchanged | shares																	1,272
Partitioned Royalty																	$ 1,100,000