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Accumulated Other Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2018
Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
| December 31,
| 2018 |  | 2017
| (In thousands)
Unrealized loss on securities available-for-sale which are not other-than-temporarily impaired | $ | (12,654) |  | $ | (3,003)
Income tax effect of unrealized loss on securities available-for-sale |  | 1,682 |  |  | 365
Net unrealized gain on securities available-for-sale which are not other-than-temporarily impaired |  | (10,972) |  |  | (2,638)
Unrealized gain (loss) on cash flow hedges |  | 14 |  |  | (510)
Income tax effect of unrealized (gain) loss on cash flow hedges |  | (5) |  |  | 199
Net unrealized gain (loss) on cash flow hedges |  | 9 |  |  | (311)
Accumulated other comprehensive (loss), net of income taxes | $ | (10,963) |  | $ | (2,949)
| Year Ended December 31, 2018
| Net unrealized |  | Net unrealized |  | Accumulated
| gains on |  | loss on |  | other
| securities |  | cash flow |  | comprehensive
| available-for-sale |  | hedges |  | (loss) income
| (In thousands)
Beginning balance | $ | (2,638) |  | $ | (311) |  | $ | (2,949)
Other comprehensive loss before reclassifications |  | (8,104) |  |  | (1,555) |  |  | (9,659)
Amounts reclassified out of accumulated other comprehensive income (loss) |  | (230) |  |  | 1,875 |  |  | 1,645
Other comprehensive income (loss) |  | (8,334) |  |  | 320 |  |  | (8,014)
Ending balance | $ | (10,972) |  | $ | 9 |  | $ | (10,963)
| Year Ended December 31, 2017
| Net unrealized |  | Net unrealized |  | Accumulated
| gains on |  | loss on |  | other
| securities |  | cash flow |  | comprehensive
| available-for-sale |  | hedges |  | (loss) income
| (In thousands)
Beginning balance | $ | 2,209 |  | $ | (613) |  | $ | 1,596
Other comprehensive loss before reclassifications |  | (11,563) |  |  | (186) |  |  | (11,749)
Amounts reclassified out of accumulated other comprehensive income (loss) |  | 6,716 |  |  | 488 |  |  | 7,204
Other comprehensive income (loss) |  | (4,847) |  |  | 302 |  |  | (4,545)
Ending balance | $ | (2,638) |  | $ | (311) |  | $ | (2,949)
| Year Ended December 31, 2016
| Net unrealized |  | Net unrealized |  | Accumulated
| gains on |  | loss on |  | other
| securities |  | cash flow |  | comprehensive
| available-for-sale |  | hedges |  | (loss) income
| (In thousands)
Beginning balance | $ | 16,924 |  |  | (2,927) |  |  | 13,997
Other comprehensive loss before reclassifications |  | (26,661) |  |  | (1,628) |  |  | (28,289)
Amounts reclassified out of accumulated other comprehensive income (loss) |  | 11,946 |  |  | 3,942 |  |  | 15,888
Other comprehensive income (loss) |  | (14,715) |  |  | 2,314 |  |  | (12,401)
Ending balance | $ | 2,209 |  | $ | (613) |  | $ | 1,596
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
| Year Ended December 31,
|  | 2018 |  |  | 2017 |  |  | 2016
| (In thousands) |
Cash flow hedges: |  |  |  |  |  |  |  |  |
Interest-rate contracts | $ | 1,875 |  | $ | 488 |  | $ | 3,642 |
Tax effect from changes in tax rates |  | - |  |  | - |  |  | 300 | Income tax expense
Available-for-sale securities: |  |  |  |  |  |  |  |  | Net interest expense
Gain on sale of investments |  | - |  |  | 6,896 |  |  | 12,207 |
Residual tax effect from OIB's change in applicable tax rate |  | 5 |  |  | 104 |  |  | 32 | Net impairment losses recognized in earnings
Tax effect from changes in tax rates |  | (235) |  |  | (284) |  |  | (293) | Income tax expense
| $ | 1,645 |  | $ | 7,204 |  | $ | 15,888 |

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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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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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