Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Accounts receivable	$ 0	$ 4
Inventory	337	345
Accrued expenses	186	73
NOL carryforwards	34,689	27,120
Interest limitation imposed by the TJCA	11,594	9,880
Stock Compensation	6,862	6,529
Deferred Revenue	5,157	7,662
Royalty Monetization	16,117	16,750
Property and Equipment	2,690	2,756
Orphan Drug and R&D Tax Credits	5,099	4,805
Intangible Assets	137	154
Section 174 R&D Capitalization	7,263	5,039
Sales of Royalty Rights	3,438	3,520
OID and Deferred Financing Cost	1,636	0
Other	143	58
Deferred tax assets	95,348	84,695
Deferred tax liabilities:
Deferred tax liabilities:	0	(193)
Prepaid expenses	(795)	(449)
Deferred tax liabilities	(795)	(642)
Valuation Allowance	(94,553)	(84,053)
Net deferred tax asset/(liability)	$ 0	$ 0