Note 8 - Intangible Assets

12 Months Ended

Dec. 31, 2021

Notes to Financial Statements

Intangible Assets Disclosure [Text Block]

Note 8—Intangible Assets

Intangible assets consisted of the following at December 31 (in thousands):

	December 31, 2021			December 31, 2020
Acquired and in-licensed rights	$	90,000		$	90,000
Less: accumulated amortization		(23,875	)		(15,860	)
Total intangible asset, net	$	66,125		$	74,140

Estimated future intangible amortization expense as of  December 31, 2021 is as follows (in thousands):

2022	$	8,015
2023		8,015
2024		8,015
2025		8,015
2026		8,015
Thereafter		26,050
Totals	$	66,125