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Note 9 - Federal Home Loan Bank Advances (Details Textual) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Long-term Federal Home Loan Bank Advances, Total |  | $ 394,000,000 | $ 354,000,000 |
Payments of FHLBank Borrowings, Financing Activities |  | 20,000,000 | 40,000,000 | $ 30,000,000
Proceeds from FHLBank Borrowings, Financing Activities |  | 60,000,000 | 44,000,000 | $ 160,000,000
Line of Credit Facility, Maximum Borrowing Capacity |  | 754,000,000 |  |
Line of Credit Facility, Remaining Borrowing Capacity |  | 354,000,000 |  |
Federal Home Loan Bank of Indianapolis [Member] |  |  |  |
Long-term Federal Home Loan Bank Advances, Total |  | $ 394,000,000 | $ 354,000,000 |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Repayment and Penalties | $ 900,000 |  |  |
Federal Home Loan Bank of Indianapolis [Member] | Federal Home Loan Bank Advances With Maturities From August 2020 to October 2021 [Member] |  |  |  |
Payments of FHLBank Borrowings, Financing Activities | 70,000,000.0 |  |  |
Federal Home Loan Bank of Indianapolis [Member] | Federal Home Loan Bank Advances With Maturities From June 2024 to June 2027 [Member] |  |  |  |
Proceeds from FHLBank Borrowings, Financing Activities | $ 70,000,000.0 |  |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End, Embedded Prepayment Fees | 0.22% |  |  |
Federal Home Loan Bank of Indianapolis [Member] | Minimum [Member] |  |  |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End |  | 0.55% | 1.36% |
Federal Home Loan Bank of Indianapolis [Member] | Minimum [Member] | Federal Home Loan Bank Advances With Maturities From August 2020 to October 2021 [Member] |  |  |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End | 1.36% |  |  |
Federal Home Loan Bank of Indianapolis [Member] | Minimum [Member] | Federal Home Loan Bank Advances With Maturities From June 2024 to June 2027 [Member] |  |  |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End | 0.55% |  |  |
Federal Home Loan Bank of Indianapolis [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] | Maximum [Member] | Federal Home Loan Bank Advances With Maturities From August 2020 to October 2021 [Member] |  |  |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End | 2.84% |  |  |
Federal Home Loan Bank of Indianapolis [Member] | Maximum [Member] | Federal Home Loan Bank Advances With Maturities From June 2024 to June 2027 [Member] |  |  |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End | 1.18% |  |  |
Federal Home Loan Bank of Indianapolis [Member] | Weighted Average [Member] |  |  |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End |  | 2.06% | 2.45% |
Federal Home Loan Bank of Indianapolis [Member] | Weighted Average [Member] | Federal Home Loan Bank Advances With Maturities From August 2020 to October 2021 [Member] |  |  |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End | 1.97% |  |  |
Federal Home Loan Bank of Indianapolis [Member] | Weighted Average [Member] | Federal Home Loan Bank Advances With Maturities From June 2024 to June 2027 [Member] |  |  |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End | 0.84% |  |  |

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- Definition States the interest rate applicable to Federal Home Loan Bank advances outstanding as of the Balance Sheet date that is for embedded prepayment fees. + References No definition available. + Details
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- Definition States the interest rate applicable to Federal Home Loan Bank advances outstanding as of the Balance Sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
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- Definition Amount of repayments and penalties incurred in the satisfaction or roll-over of Federal Home Loan Bank (FHLB) advance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
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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 -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64702-112823 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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- Definition Amount of cash inflow from Federal Home Loan Bank (FHLBank) borrowing, classified as financing activity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 + Details
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