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Note 19 - Derivative Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Derivative Instruments [Table Text Block] |
|  | December 31, 2018 |  | December 31, 2017
|  | Notional Amount |  | Fair Value (1) |  | Notional Amount |  | Fair Value (1)
|  | (In thousands)
Interest rate swaps (fair value hedge) |  | $ | 248,330 |  |  | $ | 10,593 |  |  | $ | 199,341 |  |  | $ | 6,971 |
Interest rate swaps (fair value hedge) |  |  | 19,468 |  |  |  | (502 | ) |  |  | 62,564 |  |  |  | (921 | )
Interest rate swaps (cash flow hedge) |  |  | 441,500 |  |  |  | 5,368 |  |  |  | 250,000 |  |  |  | 417 |
Interest rate swaps (cash flow hedge) |  |  | - |  |  |  | - |  |  |  | 191,500 |  |  |  | (7 | )
Interest rate swaps (non-hedge) |  |  | 36,321 |  |  |  | (1,737 | ) |  |  | 36,321 |  |  |  | (2,830 | )
Total derivatives |  | $ | 745,619 |  |  | $ | 13,722 |  |  | $ | 739,726 |  |  | $ | 3,630 |
Derivative Instruments, Gain (Loss) [Table Text Block] |
|  | For the year ended December 31,
(In thousands) |  | 2018 |  | 2017 |  | 2016
Financial Derivatives: |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps (non-hedge) |  | $ | 1,094 |  |  | $ | (102 | ) |  | $ | 71 |
Interest rate swaps (fair value hedge) |  |  | (175 | ) |  |  | (478 | ) |  |  | 1,466 |
Net gain (loss) (1) |  | $ | 919 |  |  | $ | (580 | ) |  | $ | 1,537 |
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] |
|  | December 31, 2018
|  |  |  |  |  |  |  | Gross Amounts Not Offset in the Consolidated Statement of Condition |  |
(In thousands) |  | Gross Amount of Recognized Assets |  | Gross Amount Offset in the Statement of Condition |  | Net Amount of Assets Presented in the Statement of Condition |  | Financial Instruments |  | Cash Collateral Received |  | Net Amount
Interest rate swaps |  | $ | 15,961 |  |  | $ | - |  |  | $ | 15,961 |  |  | $ | - |  |  | $ | 14,960 |  |  | $ | 1,001 |
|  |  |  |  |  |  |  | Gross Amounts Not Offset in the Consolidated Statement of Condition |  |
(In thousands) |  | Gross Amount of Recognized Liabilities |  | Gross Amount Offset in the Statement of Condition |  | Net Amount of Liabilities Presented in the Statement of Condition |  | Financial Instruments |  | Cash Collateral Pledged |  | Net Amount
Interest rate swaps |  | $ | 2,239 |  |  | $ | - |  |  | $ | 2,239 |  |  | $ | - |  |  | $ | - |  |  | $ | 2,239 |
|  | December 31, 2017
|  |  |  |  |  |  |  | Gross Amounts Not Offset in the Consolidated Statement of Condition |  |
(In thousands) |  | Gross Amount of Recognized Assets |  | Gross Amount Offset in the Statement of Condition |  | Net Amount of Assets Presented in the Statement of Condition |  | Financial Instruments |  | Cash Collateral Received |  | Net Amount
Interest rate swaps |  | $ | 7,388 |  |  | $ | - |  |  | $ | 7,388 |  |  | $ | - |  |  | $ | 3,660 |  |  | $ | 3,728 |
|  |  |  |  |  |  |  | Gross Amounts Not Offset in the Consolidated Statement of Condition |  |
(In thousands) |  | Gross Amount of Recognized Liabilities |  | Gross Amount Offset in the Statement of Condition |  | Net Amount of Liabilities Presented in the Statement of Condition |  | Financial Instruments |  | Cash Collateral Pledged |  | Net Amount
Interest rate swaps |  | $ | 3,758 |  |  | $ | - |  |  | $ | 3,758 |  |  | $ | - |  |  | $ | - |  |  | $ | 3,758 |

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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4E -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624181-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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- Definition Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109980867&loc=d3e41620-113959 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109980867&loc=d3e41638-113959 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109980867&loc=d3e41678-113959 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109980867&loc=d3e41641-113959 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(n)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579240-113959 + Details
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