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Note 10 - Fair Values of Financial Instruments (Details) - Fair Value Hierarchy of Financial Instruments - USD ($) | Mar. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Financial assets: |  |  |
Securities available for sale | [1] | $ 343,805,000 | $ 346,992,000
FHLBI stock | [2] | 7,567,000 | 7,567,000
FHLBI stock | [2] | 7,567,000 | 7,567,000
Bank owned life insurance |  | 59,248,000 | 58,971,000
Financial liabilities: |  |  |
Deposits |  | 2,265,122,000 | 2,275,382,000
Repurchase agreements |  | 162,312,000 | 154,771,000
Accrued interest payable |  | 17,745,000 | 16,445,000
Interest Rate Swap [Member] |  |  |
Financial liabilities: |  |  |
Interest rate swap | [1] | 274,000 | 253,000
Interest rate swap | [1] | 274,000 | 253,000
Fair Value, Inputs, Level 1 [Member] |  |  |
Financial assets: |  |  |
Cash |  | 12,146,000 | 12,496,000
Cash |  | 12,146,000 | 12,496,000
Securities available for sale |  | 0 |
Fair Value, Inputs, Level 2 [Member] |  |  |
Financial assets: |  |  |
Cash equivalents |  | 89,035,000 | 77,395,000
Cash equivalents |  | 89,035,000 | 77,395,000
Loans held for sale |  | 544,000 | 1,316,000
Loans held for sale |  | 544,000 | 1,316,000
Bank owned life insurance |  | 59,248,000 | 58,971,000
Bank owned life insurance |  | 59,248,000 | 58,971,000
Accrued interest receivable |  | 8,202,000 | 7,836,000
Accrued interest receivable |  | 8,202,000 | 7,836,000
Financial liabilities: |  |  |
Deposits |  | 2,265,122,000 | 2,275,382,000
Deposits |  | 2,205,359,000 | 2,208,724,000
Repurchase agreements |  | 162,312,000 | 154,771,000
Repurchase agreements |  | 162,312,000 | 154,771,000
FHLBI advances |  | 98,000,000 | 68,000,000
FHLBI advances |  | 99,553,000 | 68,858,000
Subordinated debentures |  | 44,324,000 | 55,154,000
Subordinated debentures |  | 44,345,000 | 55,760,000
Accrued interest payable |  | 1,422,000 | 1,479,000
Accrued interest payable |  | 1,422,000 | 1,479,000
Fair Value, Inputs, Level 3 [Member] |  |  |
Financial assets: |  |  |
Loans, net |  | 2,278,862,000 | 2,260,730,000
Loans, net |  | $ 2,275,910,000 | $ 2,259,710,000
[1] | See Note 11 for a description of the fair value hierarchy as well as a disclosure of levels for classes of financial assets and liabilities.
[2] | It is not practical to determine the fair value of FHLBI stock due to transferability restrictions.

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- Definition Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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