Note 8 - Borrowings -Borrowing (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Borrowings	$ 386,784	$ 477,127
Federal Home Loan Bank of Chicago [Member]
Short term balance	$ 185,700	$ 5,000
Short term balance, weighted average rate	4.26%	0.00%
Borrowings	$ 386,784	$ 477,127
Long-term debt, weighted average rate	3.68%	2.02%
Federal Home Loan Bank of Chicago [Member] \| Long-Term Debt Maturing 2025 [Member]
Borrowings	$ 125,000	$ 0
Long-term debt, weighted average rate	3.83%	0.00%
Federal Home Loan Bank of Chicago [Member] \| Long Term Debt Maturing 2027 [Member]
Borrowings	$ 50,000	$ 50,000
Long-term debt, weighted average rate	1.73%	1.73%
Federal Home Loan Bank of Chicago [Member] \| Long Term Debt Maturing 2028 [Member]
Borrowings	$ 0	$ 255,000
Long-term debt, weighted average rate	0.00%	2.37%
Federal Home Loan Bank of Chicago [Member] \| Long Term Debt Maturing 2029 [Member]
Borrowings	$ 0	$ 165,000
Long-term debt, weighted average rate	0.00%	1.61%
Federal Home Loan Bank of Chicago [Member] \| Long-term Debt Maturing 2032 [Member]
Borrowings	$ 25,000	$ 0
Long-term debt, weighted average rate	2.35%	0.00%
Repurchase Agreements [Member]
Short term balance	$ 1,084	$ 2,127
Short term balance, weighted average rate	7.21%	3.00%

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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