Note 4 - Repurchase Agreements and Reverse Purchase Agreements (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Restricted Cash and Cash Equivalent, Current	$ 58,696	$ 25,723
Repurchase Agreement Counterparty, Amount at Risk	455,600
Securities for Reverse Repurchase Agreements	128,613	0
Securities Borrowed Under Reverse Repurchase Agreements	128,724	0
Asset Pledged as Collateral [Member]
Restricted Cash and Cash Equivalent, Current	58,696	25,723
Repurchase Agreements [Member] \| Asset Pledged as Collateral [Member]
Restricted Cash and Cash Equivalent, Current	$ 51,171	$ 22,818

Amount of cash and cash equivalent restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-8

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-4

Name:	us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant