Note 7 - Federal Home Loan Bank of Indianapolis Advances (Details Textual) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Long-Term Federal Home Loan Bank Advances, Total	$ 338,263,000	$ 374,000,000
Line of Credit Facility, Maximum Borrowing Capacity	1,000,000,000.0
Line of Credit Facility, Remaining Borrowing Capacity	659,000,000
Federal Home Loan Bank of Indianapolis [Member] \| Bullet Advances [member]
Long-Term Federal Home Loan Bank Advances, Total	$ 310,000,000	$ 374,000,000
Federal Home Loan Bank of Indianapolis [Member] \| Bullet Advances [member] \| Minimum [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End	0.55%	0.55%
Federal Home Loan Bank of Indianapolis [Member] \| Bullet Advances [member] \| Maximum [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End	3.18%	3.18%
Federal Home Loan Bank of Indianapolis [Member] \| Bullet Advances [member] \| Weighted Average [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End	1.92%	2.00%
Federal Home Loan Bank of Indianapolis [Member] \| Amortizing Advances [Member]
Long-Term Federal Home Loan Bank Advances, Total	$ 28,300,000	$ 0
Federal Home Loan Bank of Indianapolis [Member] \| Amortizing Advances [Member] \| Weighted Average [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End	2.52%

States the interest rate applicable to Federal Home Loan Bank advances outstanding as of the Balance Sheet date.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 45
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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-SubTopic 10
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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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