Note 5 - Cash, Cash Equivalents and Restricted Cash (Details Textual) - USD ($) $ in Millions |
6 Months Ended | 12 Months Ended |
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Jun. 30, 2023 |
Dec. 31, 2022 |
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Average Excess Balances Maintained With Federal Reserve Bank | $ 1,040.0 | $ 1,240.0 |
Margin Deposit Assets | 80.6 | 88.9 |
Restricted Cash | 41.6 | 25.4 |
Bank [Member] | ||
Restricted Cash | $ 3.5 | $ 8.2 |
X | ||||||||||
- Definition Amount of average balances maintained with Federal Reserve Bank in excess of the average balances required. No definition available.
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X | ||||||||||
- Definition The amount of cash or securities placed with a broker or counterparty as security for a trading or derivatives securities position which was partially obtained with funds provided by the broker dealer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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X | ||||||||||
- Definition Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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X | ||||||||||
- Details
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