Deposits - Interest Expense on Deposits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Note 9 - Deposits - Interest Expense on Deposits (Details)
Certificate of deposit accounts	$ 7,340	$ 18,096	$ 35,078
Savings accounts	255	495	1,378
Money market accounts	7,271	14,368	27,819
NOW accounts	5,453	9,309	23,553
Total due to depositors	20,319	42,268	87,828
Mortgagors' escrow deposits	5	44	229
Total interest expense on deposits	$ 20,324	$ 42,312	$ 88,057