Deposits - Interest Expense on Deposits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Note 9 - Deposits - Interest Expense on Deposits (Details)
Certificate of deposit accounts	$ 64,844	$ 12,547	$ 7,340
Savings accounts	520	211	255
Money market accounts	58,898	19,039	7,271
NOW accounts	64,191	15,353	5,453
Total due to depositors	188,453	47,150	20,319
Mortgagors' escrow deposits	202	135	5
Total interest expense on deposits	$ 188,655	$ 47,285	$ 20,324