Note 5 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	Fair Value		Fair value measurement using
	March 31,
(in thousands)	2023		Level 1		Level 2		Level 3
Cash equivalents:
Money market funds	$	3,255	$	3,255	$	-	$	-
Total Assets	$	3,255	$	3,255	$	-	$	-

	Fair Value		Fair value measurement using
	December 31,
(in thousands)	2022		Level 1		Level 2		Level 3
Cash equivalents:
Money market funds	$	4,212	$	4,212	$	-	$	-
Total Assets	$	4,212	$	4,212	$	-	$	-

Fair Value Measurements, Nonrecurring [Table Text Block]

	Fair Value		Fair value measurement using
	March 31,
(in thousands)	2023		Level 1		Level 2		Level 3
Goodwill	$	2,574	$	-	$	-	$	2,574

	Fair Value		Fair value measurement using
	December 31,
(in thousands)	2022		Level 1		Level 2		Level 3
Intangible assets:
Rostafuroxin drug candidate	$	2,910	$	-	$	-	$	2,910
Goodwill	$	3,058	$	-	$	-	$	3,058