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Accumulated Other Comprehensive Income (Tables) | 6 Months Ended
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Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | The following table shows changes in accumulated other comprehensive income (loss) by component for the three and six month periods ended June 30, 2016 and 2015:
|  | Unrealized Gains and Losses on Available-for-Sale Securities (1) |  | Unrealized Gains and Losses on Pension Plan Liability (1) |  | Total (1)
Three months ended June 30, 2016 |  | (in thousands)
Beginning balance |  | $ | 18,918 |  |  | $ | (6,575 | ) |  | $ | 12,343 |
Other comprehensive income before reclassifications |  | 8,508 |  |  | — |  |  | 8,508 |
Amounts reclassified from accumulated other comprehensive income (loss) |  | (146 | ) |  | 106 |  |  | (40 | )
Net current-period other comprehensive income |  | 8,362 |  |  | 106 |  |  | 8,468 |
Ending balance |  | $ | 27,280 |  |  | $ | (6,469 | ) |  | $ | 20,811 |
Three months ended June 30, 2015 |  |  |  |  |  |
Beginning balance |  | $ | 16,379 |  |  | $ | (2,093 | ) |  | $ | 14,286 |
Other comprehensive loss before reclassifications |  | (11,341 | ) |  | — |  |  | (11,341 | )
Amounts reclassified from accumulated other comprehensive income (loss) |  | (219 | ) |  | 63 |  |  | (156 | )
Net current-period other comprehensive income (loss) |  | (11,560 | ) |  | 63 |  |  | (11,497 | )
Ending balance |  | $ | 4,819 |  |  | $ | (2,030 | ) |  | $ | 2,789 |
Six months ended June 30, 2016 |  |  |  |  |  |
Beginning balance |  | $ | 386 |  |  | $ | (6,681 | ) |  | $ | (6,295 | )
Other comprehensive loss before reclassifications |  | 27,278 |  |  | — |  |  | 27,278 |
Amounts reclassified from accumulated other comprehensive income (loss) |  | (384 | ) |  | 212 |  |  | (172 | )
Net current-period other comprehensive income |  | 26,894 |  |  | 212 |  |  | 27,106 |
Ending balance |  | $ | 27,280 |  |  | $ | (6,469 | ) |  | $ | 20,811 |
Six months ended June 30, 2015 |  |  |  |  |  |
Beginning balance |  | $ | 7,462 |  |  | $ | (1,841 | ) |  | $ | 5,621 |
Other comprehensive loss before reclassifications |  | (1,965 | ) |  | (280 | ) |  | (2,245 | )
Amounts reclassified from accumulated other comprehensive income (loss) |  | (678 | ) |  | 91 |  |  | (587 | )
Net current-period other comprehensive loss |  | (2,643 | ) |  | (189 | ) |  | (2,832 | )
Ending balance |  | $ | 4,819 |  |  | $ | (2,030 | ) |  | $ | 2,789 |
__________ (1) All amounts are net of tax. Amounts in parenthesis indicate debits.
Schedule of reclassifications from accumulated other comprehensive income [Table Text Block] | The following table shows details regarding the reclassifications from accumulated other comprehensive income (loss) for the three and six month periods ended June 30, 2016 and 2015:
|  | Amount Reclassified from Accumulated Other Comprehensive Income (Loss) |  |
|  | Three Months Ended June 30, |  | Six Months Ended June 30, |  | Affected line Item in the Consolidated
|  | 2016 |  | 2015 |  | 2016 |  | 2015 |  | Statement of Income
|  | (in thousands) |  |
Unrealized gains and losses on available-for-sale securities |  |  |  |  |  |  |  |  |  |
Investment securities gains |  | $ | 229 |  |  | $ | 343 |  |  | $ | 602 |  |  | $ | 1,064 |  |  | Investment securities gains, net
|  | 229 |  |  | 343 |  |  | 602 |  |  | 1,064 |  |  | Total before tax
|  | (83 | ) |  | (124 | ) |  | (218 | ) |  | (386 | ) |  | Income tax provision
|  | $ | 146 |  |  | $ | 219 |  |  | $ | 384 |  |  | $ | 678 |  |  | Net of tax
Amortization of pension plan liability |  |  |  |  |  |  |  |  |  |
Actuarial losses |  | $ | (167 | ) |  | $ | (98 | ) |  | $ | (334 | ) |  | $ | (142 | ) |  | Compensation and employee benefits
|  | (167 | ) |  | (98 | ) |  | (334 | ) |  | (142 | ) |  | Total before tax
|  | 61 |  |  | 35 |  |  | 122 |  |  | 51 |  |  | Income tax benefit
|  | $ | (106 | ) |  | $ | (63 | ) |  | $ | (212 | ) |  | $ | (91 | ) |  | Net of tax

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- Definition Accumulated Other Comprehensive Income (Loss) [Abstract] + References No definition available. + Details
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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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