Note 7 - Federal Home Loan Bank of Indianapolis Advances (Details Textual) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Long-Term Federal Home Loan Bank Advances	$ 457,910,000	$ 308,263,000
Line of Credit Facility, Maximum Borrowing Capacity	888,000,000
Line of Credit Facility, Remaining Borrowing Capacity	424,000,000
Federal Home Loan Bank of Indianapolis [Member] \| Bullet Advances [member]
Long-Term Federal Home Loan Bank Advances	$ 430,000,000	$ 280,000,000
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	5.05%	3.13%
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	2.80%	1.84%
Federal Home Loan Bank of Indianapolis [Member] \| Amortizing Advances [Member]
Long-Term Federal Home Loan Bank Advances	$ 27,900,000	$ 28,300,000
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%	2.52%

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

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- Definition

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
-Topic 942
-SubTopic 470
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480876/942-470-45-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

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-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480848/942-470-50-2

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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

+ References

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