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Fair Value Measurements - Inputs (Details) shares in Thousands				3 Months Ended	6 Months Ended
	Mar. 18, 2025 USD ($)	Nov. 21, 2024 USD ($) $ / shares shares	Dec. 05, 2023 USD ($) $ / shares Y shares	Jun. 30, 2025 USD ($) $ / shares Y shares	Jun. 30, 2025 USD ($) $ / shares Y shares	Mar. 03, 2025 USD ($) $ / shares Y shares	Dec. 31, 2024 USD ($)	Nov. 25, 2024 $ / shares shares	Mar. 25, 2024 $ / shares	Mar. 20, 2024 USD ($) $ / shares shares	Apr. 19, 2022 USD ($) $ / shares Y shares
Fair value inputs
Warrant derivative liability \| $				$ 2,611,000	$ 2,611,000		$ 6,633,000
Warrants outstanding (in shares) \| shares				5,479	5,479
Credit Agreement
Fair value inputs
Fair value debt \| $				$ 101,135,000	$ 101,135,000		$ 94,204,000
OnkosXcel Warrants
Fair value inputs
Warrants to purchase common stock (in shares) \| shares											175
OnkosXcel Warrants \| Volatility (annual)
Fair value inputs
Derivative liability input				1.15	1.15
March 2025 Option Warrants
Fair value inputs
Increase (decrease) carrying value \| $	$ 369,000				$ 369,000
Warrant derivative liability \| $						$ 369,000
Warrants to purchase common stock (in shares) \| shares						4,000
Warrants outstanding value \| $				$ 0	$ 0
March 2025 Option Warrants \| Strike price
Fair value inputs
Derivative liability input				3.5	3.5
March 2025 Option Warrants \| Share price input
Fair value inputs
Derivative liability input				2.7	2.7
March 2025 Option Warrants \| Volatility (annual)
Fair value inputs
Derivative liability input				0.392	0.392
March 2025 Option Warrants \| Term
Fair value inputs
Derivative liability input \| Y				0.04	0.04
March 2025 Option Warrants \| Risk-free rate
Fair value inputs
Derivative liability input				0.0439	0.0439
March 2025 Accompanying Warrants
Fair value inputs
Fair value warrant classified as equity \| $				$ 977,000	$ 977,000
Exercise price (in dollars per share)				$ 4.2	$ 4.2
Gain (loss) on derivatives \| $				$ 425,000	$ 1,854,000
Warrants outstanding (in shares) \| shares				4,000	4,000
March 2025 Accompanying Warrants \| Strike price
Fair value inputs
Derivative liability input				4.2	4.2	4.2
March 2025 Accompanying Warrants \| Share price input
Fair value inputs
Derivative liability input				1.81	1.81	2.7
March 2025 Accompanying Warrants \| Volatility (annual)
Fair value inputs
Derivative liability input				0.387	0.387	0.392
March 2025 Accompanying Warrants \| Term
Fair value inputs
Derivative liability input \| Y				4.7	4.7	5
March 2025 Accompanying Warrants \| Risk-free rate
Fair value inputs
Derivative liability input				0.0378	0.0378	0.0401
Closing Date Warrants
Fair value inputs
Fair value warrant classified as equity \| $		$ 164,000	$ 802,000							$ 105,000	$ 548,000
Exercise price (in dollars per share)		$ 7.68	$ 58.3232	$ 7.68	$ 7.68					$ 49.1568	$ 320.64
Warrants to purchase common stock (in shares) \| shares											17
Repricing of stock purchase warrants \| $		$ 59,000	$ 254,000
Warrants outstanding value \| $											$ 3,245,000
Warrants outstanding (in shares) \| shares				17	17
Closing Date Warrants \| Strike price
Fair value inputs
Derivative liability input											320.64
Closing Date Warrants \| Share price input
Fair value inputs
Derivative liability input											238.88
Closing Date Warrants \| Volatility (annual)
Fair value inputs
Derivative liability input											0.95
Closing Date Warrants \| Term
Fair value inputs
Derivative liability input \| Y											7
Closing Date Warrants \| Risk-free rate
Fair value inputs
Derivative liability input											0.0295
2023 Warrants
Fair value inputs
Fair value warrant classified as equity \| $			$ 200,000
Exercise price (in dollars per share)			$ 58.3232	$ 7.68	$ 7.68
Warrants to purchase common stock (in shares) \| shares			4
Warrants outstanding (in shares) \| shares				4	4
2023 Warrants \| Strike price
Fair value inputs
Derivative liability input			58.3232
2023 Warrants \| Share price input
Fair value inputs
Derivative liability input			59.36
2023 Warrants \| Volatility (annual)
Fair value inputs
Derivative liability input			0.99
2023 Warrants \| Term
Fair value inputs
Derivative liability input \| Y			5.4
2023 Warrants \| Risk-free rate
Fair value inputs
Derivative liability input			0.0414
2024 Warrants
Fair value inputs
Fair value warrant classified as equity \| $										$ 224,000
Exercise price (in dollars per share)										$ 49.1568
Warrants to purchase common stock (in shares) \| shares										6
2024 Warrants \| Strike price
Fair value inputs
Derivative liability input										49.1568
2024 Warrants \| Share price input
Fair value inputs
Derivative liability input										44.48
2024 Warrants \| Volatility (annual)
Fair value inputs
Derivative liability input										1.122
2024 Warrants \| Term
Fair value inputs
Derivative liability input \| $										5
2024 Warrants \| Risk-free rate
Fair value inputs
Derivative liability input										0.0425
March 2024 Accompanying Warrants
Fair value inputs
Fair value warrant classified as equity \| $				$ 563,000	$ 563,000
Exercise price (in dollars per share)		$ 9.136							$ 51.2
Warrant derivative liability \| $				563,000	563,000
Gain (loss) on derivatives \| $				$ 78,000	$ 1,757,000
Warrants outstanding (in shares) \| shares								539
March 2024 Accompanying Warrants \| Strike price
Fair value inputs
Derivative liability input				1.81	1.81
March 2024 Accompanying Warrants \| Volatility (annual)
Fair value inputs
Derivative liability input				1.258	1.258
March 2024 Accompanying Warrants \| Term
Fair value inputs
Derivative liability input \| Y				3.75	3.75
March 2024 Accompanying Warrants \| Risk-free rate
Fair value inputs
Derivative liability input				0.0372	0.0372
March 2024 Accompanying Warrants, Strike Price Amended
Fair value inputs
Exercise price (in dollars per share)				$ 9.136	$ 9.136
Warrants outstanding (in shares) \| shares		534		534	534			534
March 2024 Accompanying Warrants, Strike Price Amended \| Strike price
Fair value inputs
Derivative liability input				9.136	9.136
Exercise price (in dollars per share)								$ 9.136
March 2024 Accompanying Warrants, Strike Price Not Amended
Fair value inputs
Exercise price (in dollars per share)				$ 51.2	$ 51.2
Warrants outstanding (in shares) \| shares				5	5
March 2024 Accompanying Warrants, Strike Price Not Amended \| Strike price
Fair value inputs
Derivative liability input				51.2	51.2
November 2024 Accompanying Warrants
Fair value inputs
Fair value warrant classified as equity \| $				$ 1,033,000	$ 1,033,000
Warrant derivative liability \| $				1,033,000	1,033,000
Gain (loss) on derivatives \| $				$ 160,000	$ 3,240,000
November 2024 Accompanying Warrants \| Strike price
Fair value inputs
Exercise price (in dollars per share)				$ 7.68	$ 7.68
November 2024 Accompanying Warrants \| Share price input
Fair value inputs
Derivative liability input				1.81	1.81
November 2024 Accompanying Warrants \| Volatility (annual)
Fair value inputs
Derivative liability input				1.185	1.185
November 2024 Accompanying Warrants \| Term
Fair value inputs
Derivative liability input \| Y				4.4	4.4
November 2024 Accompanying Warrants \| Risk-free rate
Fair value inputs
Derivative liability input				0.0376	0.0376