Note B - Summary of Significant Accounting Policies (Details Textual) $ in Thousands		12 Months Ended
Mar. 20, 2012	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Investments, Fair Value Disclosure		$ 41,700	$ 24,700
Unrealized Gain (Loss) on Investments		18,000,000	600
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One		35,700
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five		6,000
Goodwill		4,701	4,701
Goodwill, Impairment Loss		0	0
Indefinite-Lived Intangible Assets (Excluding Goodwill)		2,000	2,000
Finite-Lived Intangible Assets, Net		$ 61,300	$ 67,200
Finite-Lived Intangible Asset, Useful Life (Year)		13 years	11 years
Amortization of Intangible Assets		$ 6,235	$ 772
Payments to Acquire Intangible Assets		6,000	(0)
Impairment, Long-Lived Asset, Held-for-Use		0	0
Inventory, Net		1,970	0
Inventory Write-down		5,746	0
Income Tax Examination, Penalties and Interest Accrued		$ 0	0
Income tax returns under examination		0
UNITED STATES \| Operating Segments [Member]
Long-Lived Assets		$ 13,400	10,900
Europe [Member] \| Operating Segments [Member]
Long-Lived Assets		500	500
Pre-launch Inventory that Qualified for Capitalization [Member]
Inventory, Net		$ 0	0
Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)		3 years
Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)		10 years
AZSTARYS License Agreement [Member] \| Aquestive Therapeutics [Member] \| License [Member]
Royalty Revenue, Percent	10.00%	10.00%
Patents [Member]
Finite-Lived Intangible Asset, Useful Life (Year)		13 years
Patents [Member] \| OLPRUVA [Member]
Amortization of Intangible Assets		$ 5,900	800
Patents [Member] \| XOMA License Agreement [Member]
Finite-Lived Intangible Asset, Useful Life (Year)		5 years
Amortization of Intangible Assets		$ 300
Patents [Member] \| XOMA License Agreement [Member] \| Capitalization, Royalty Expense [Member]
Payments to Acquire Intangible Assets		6,000
In Process Research and Development [Member]
Indefinite-Lived Intangible Assets (Excluding Goodwill)		2,000	2,000
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)		$ 0	$ 0

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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