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Note 15 - Warehouse Credit Facilities - Mortgage Warehouse Credit Facilities (Details) (Parentheticals) - Warehouse Credit Facilities [Member]
 12 Months Ended
Dec. 31, 2022
Facility A [Member]  
Basis spread 1.70%
Facility B [Member] | London Interbank Offered Rate (LIBOR) [Member]  
Basis spread 1.70%
Facility C [Member]  
Basis spread 1.60%