Note 6 - Investments (Details Textual) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		12 Months Ended
	Sep. 30, 2021	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Proceeds from Sale of Equity Securities, FV-NI		$ 51,655	$ 0
Revenue from Contract with Customer, Excluding Assessed Tax		149,952	$ 173,686
Assets		2,128,327		$ 2,200,212
Liabilities		816,664		834,764
Equity Method Investment, Quoted Market Value		300		500
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Assets		53,000		50,900
Liabilities		20,700		18,300
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ 6,900		$ 31,100
LeaderMed [Member] | LeaderMed Joint Venture [Member]
Minority Interest, Shares Issued (in shares)	4,703
Subsidiary, Ownership Percentage, Parent	47.00%
Revenue from Contract with Customer, Excluding Assessed Tax	$ 1,000
GeneDx Holdings [Member]
Investment Owned, Shares Sold (in shares)		620
Proceeds from Sale of Equity Securities, FV-NI		$ 51,700
Investment Owned, Balance, Shares (in shares)		0
Equity Method Investment, Ownership Percentage				2.20%
Entera Bio Ltd. [Member]
Equity Security, FV-NI, Ownership Percent		8.10%
ChromaDex Corporation [Member]
Equity Method Investment, Ownership Percentage		0.05%
Equity Security, FV-NI, Ownership Percent		0.05%
Eloxx Pharmaceuticals, Inc. [Member]
Equity Security, FV-NI, Ownership Percent		1.00%
Xenetic Biosciences, Inc. [Member]
Equity Security, FV-NI, Ownership Percent		2.90%
CAMP4 Therapeutics Corporation [Member]
Equity Security, FV-NI, Ownership Percent		1.50%
VBI Vaccines Inc. [Member]
Equity Security, FV-NI, Ownership Percent		0.00%
HealthSnap, Inc. [Member]
Equity Security, FV-NI, Ownership Percent		3.80%
Zebra [Member]
Equity Method Investment, Ownership Percentage		29.00%
Zebra [Member] | Variable Interest Entity, Not Primary Beneficiary [Member] | Series A-2 Preferred Stock [Member]
Investment Owned, Balance, Shares (in shares)		1,260,000			1,260,000
Zebra [Member] | Variable Interest Entity, Not Primary Beneficiary [Member] | Restricted Stock [Member]
Investment Owned, Balance, Shares (in shares)		900,000		900,000
Equity Method Investment, Ownership Percentage		29.00%		29.00%
BioCardia [Member]
Equity Method Investment, Ownership Percentage		0.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)		47,000		47,000
Pharmsynthez [Member]
Equity Method Investment, Ownership Percentage		6.00%
COCP [Member]
Equity Method Investment, Ownership Percentage		2.00%
NIMS [Member]
Equity Method Investment, Ownership Percentage		1.00%
LeaderMed [Member]
Equity Method Investment, Ownership Percentage		47.00%