Note 12 - Growth Equity Fund (Details Textual) - A3 Ventures Fund 1, L.P [Member] - USD ($) $ in Millions		3 Months Ended
Feb. 28, 2024	Mar. 31, 2026	Dec. 31, 2025
Variable Interest Entity, Financial or Other Support, Amount	$ 50.0	$ 50.0
Management Fee, Percent of Total Commitment	2.00%
Management Fee Payable		$ 1.6	$ 1.6

The amount of financial or other support the reporting entity has provided (explicitly or implicitly) to the Variable Interest Entity (VIE) that it was not previously contractually required to provide or that the reporting entity intends to provide, including, for example, situations in which the reporting entity assisted the VIE in obtaining another type of support.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481203/810-10-50-5A

Name:	us-gaap_VariableInterestEntityFinancialOrOtherSupportAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration