Note 18 - Net Capital Requirements (Details Textual) $ in Thousands	Mar. 31, 2026 USD ($)
Cohen Securities [Member]
Broker-Dealer, Minimum Net Capital Required, Aggregate Indebtedness Standard	$ 250
Broker-Dealer, Net Capital	69,946
Broker-Dealer, Excess Net Capital, 1500 Percent, Aggregate Indebtedness Standard	69,696
CCFESA [Member]
Broker-Dealer, Minimum Net Capital Required, Aggregate Indebtedness Standard	701
Broker-Dealer, Net Capital	3,325
Broker-Dealer, Excess Net Capital, 1500 Percent, Aggregate Indebtedness Standard	$ 2,624

Amount of net capital in excess of minimum required net capital, calculated under Aggregate Indebtedness Standard.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Rule 15c3-1
-Number 240
-Section 15c3-1
-Publisher SEC

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Minimum amount of net capital required to be maintained by broker-dealer and its subsidiary, calculated under Aggregate Indebtedness Standard.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Rule 15c3-1
-Number 240
-Section 15c3-1
-Publisher SEC

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Amount of net capital of broker-dealer.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Rule 15c3-1
-Number 240
-Section 15c3-1
-Publisher SEC

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