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Accumulated Other Comprehensive Income (Tables) | 6 Months Ended
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Jun. 30, 2019
Accumulated Other Comprehensive Income [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
| June 30, |  | December 31,
| 2019 |  | 2018
| (In thousands)
Unrealized loss on securities available-for-sale which are not other-than-temporarily impaired | $ | (3,478) |  | $ | (12,654)
Income tax effect of unrealized loss on securities available-for-sale |  | 391 |  |  | 1,682
Net unrealized gain on securities available-for-sale which are not other-than-temporarily impaired |  | (3,087) |  |  | (10,972)
Unrealized (loss) gain on cash flow hedges |  | (958) |  |  | 14
Income tax effect of unrealized (loss) gain on cash flow hedges |  | 359 |  |  | (5)
Net unrealized (loss) gain on cash flow hedges |  | (599) |  |  | 9
Accumulated other comprehensive (loss), net of income taxes | $ | (3,686) |  | $ | (10,963)
| Quarter Ended June 30,
| 2019 |  | 2018
| Net unrealized |  | Net unrealized |  | Accumulated |  | Net unrealized |  | Net unrealized |  | Accumulated
| gains on |  | loss on |  | other |  | gains on |  | loss on |  | other
| securities |  | cash flow |  | comprehensive |  | securities |  | cash flow |  | comprehensive
| available-for-sale |  | hedges |  | (loss) income |  | available-for-sale |  | hedges |  | (loss) income
| (In thousands)
Beginning balance | $ | (7,841) |  | $ | (206) |  | $ | (8,047) |  | $ | (12,274) |  | $ | 89 |  | $ | (12,185)
Other comprehensive income (loss) before reclassifications |  | (10) |  |  | (952) |  |  | (962) |  |  | (3,178) |  |  | (281) |  |  | (3,459)
Amounts reclassified out of accumulated other comprehensive (loss) income |  | 4,764 |  |  | 559 |  |  | 5,323 |  |  | (66) |  |  | 448 |  |  | 382
Other comprehensive income (loss) |  | 4,754 |  |  | (393) |  |  | 4,361 |  |  | (3,244) |  |  | 167 |  |  | (3,077)
Ending balance | $ | (3,087) |  | $ | (599) |  | $ | (3,686) |  | $ | (15,518) |  | $ | 256 |  | $ | (15,262)
| Six-Month Period Ended June 30, 2018
| 2019 |  | 2018
| Net unrealized |  | Net unrealized |  | Accumulated |  | Net unrealized |  | Net unrealized |  | Accumulated
| gains on |  | loss on |  | other |  | gains on |  | loss on |  | other
| securities |  | cash flow |  | comprehensive |  | securities |  | cash flow |  | comprehensive
| available-for-sale |  | hedges |  | (loss) income |  | available-for-sale |  | hedges |  | (loss) income
| (In thousands)
Beginning balance | $ | (10,972) |  | $ | 9 |  | $ | (10,963) |  | $ | (2,638) |  | $ | (311) |  | $ | (2,949)
Transfer of securities held to maturity to available-for-sale |  | (12,041) |  |  | - |  |  | (12,041) |  |  | - |  |  | - |  |  | -
Other comprehensive (loss) income before reclassifications |  | 15,178 |  |  | (1,384) |  |  | 13,794 |  |  | (12,754) |  |  | (255) |  |  | (13,009)
Amounts reclassified out of accumulated other comprehensive (loss) income |  | 4,748 |  |  | 776 |  |  | 5,524 |  |  | (126) |  |  | 822 |  |  | 696
Other comprehensive income (loss) |  | 7,885 |  |  | (608) |  |  | 7,277 |  |  | (12,880) |  |  | 567 |  |  | (12,313)
Ending balance | $ | (3,087) |  | $ | (599) |  | $ | (3,686) |  | $ | (15,518) |  | $ | 256 |  | $ | (15,262)
Reclassification out of Accumulated Other Comprehensive Income [Table text block] |
| Amount reclassified out of accumulated other comprehensive income | Affected Line Item in Consolidated Statement of Operations
| Quarter Ended June 30,
|  | 2019 |  |  | 2018
| (In thousands) |
Cash flow hedges: |  |  |  |  |  |
Interest-rate contracts | $ | 559 |  | $ | 448 |
Available-for-sale securities: |  |  |  |  |  | Net interest expense
Gain on sale of investments |  | 4,776 |  |  | - | Net gain on sale of securities
Tax effect from changes in tax rates |  | (13) |  |  | (66) | Income tax expense
| $ | 5,322 |  | $ | 382 |
| Amount reclassified out of accumulated other comprehensive income | Affected Line Item in Consolidated Statement of Operations
| Six-Month Period Ended June 30,
|  | 2019 |  |  | 2018
| (In thousands) |
Cash flow hedges: |  |  |  |  |  |
Interest-rate contracts | $ | 776 |  | $ | 822 |
Available-for-sale securities: |  |  |  |  |  | Net interest expense
Gain on sale of investments |  | 4,776 |  |  | - | Income tax expense
Residual tax effect from OIB's change in applicable tax rate |  | - |  |  | 5 | Income tax expense
Tax effect from changes in tax rates |  | (29) |  |  | (131) | Income tax expense
| $ | 5,523 |  | $ | 696 |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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