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Accumulated Other Comprehensive Income (Tables) | 9 Months Ended
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Sep. 30, 2015
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 nine month periods ended September 30, 2015 and 2014:
|  | Unrealized Gains and Losses on Available-for-Sale Securities (1) |  | Unrealized Gains and Losses on Pension Plan Liability (1) |  | Total (1)
Three months ended September 30, 2015 |  | (in thousands)
Beginning balance |  | $ | 4,819 |  |  | $ | (2,030 | ) |  | $ | 2,789 |
Other comprehensive loss before reclassifications |  | 10,126 |  |  | — |  |  | 10,126 |
Amounts reclassified from accumulated other comprehensive income (loss) (2) |  | (151 | ) |  | 62 |  |  | (89 | )
Net current-period other comprehensive income (loss) |  | 9,975 |  |  | 62 |  |  | 10,037 |
Ending balance |  | $ | 14,794 |  |  | $ | (1,968 | ) |  | $ | 12,826 |
Three months ended September 30, 2014 |  |  |  |  |  |
Beginning balance |  | $ | 5,448 |  |  | $ | (1,888 | ) |  | $ | 3,560 |
Other comprehensive income before reclassifications |  | (4,057 | ) |  | — |  |  | (4,057 | )
Amounts reclassified from accumulated other comprehensive income (loss) (2) |  | (21 | ) |  | 23 |  |  | 2 |
Net current-period other comprehensive income |  | (4,078 | ) |  | 23 |  |  | (4,055 | )
Ending balance |  | $ | 1,370 |  |  | $ | (1,865 | ) |  | $ | (495 | )
Nine months ended September 30, 2015 |  |  |  |  |  |
Beginning balance |  | $ | 7,462 |  |  | $ | (1,841 | ) |  | $ | 5,621 |
Other comprehensive loss before reclassifications |  | 8,161 |  |  | (280 | ) |  | 7,881 |
Amounts reclassified from accumulated other comprehensive income (loss) (2) |  | (829 | ) |  | 153 |  |  | (676 | )
Net current-period other comprehensive loss |  | 7,332 |  |  | (127 | ) |  | 7,205 |
Ending balance |  | $ | 14,794 |  |  | $ | (1,968 | ) |  | $ | 12,826 |
Nine months ended September 30, 2014 |  |  |  |  |  |
Beginning balance |  | $ | (10,108 | ) |  | $ | (1,936 | ) |  | $ | (12,044 | )
Other comprehensive income before reclassifications |  | 11,830 |  |  | — |  |  | 11,830 |
Amounts reclassified from accumulated other comprehensive income (loss) (2) |  | (352 | ) |  | 71 |  |  | (281 | )
Net current-period other comprehensive income |  | 11,478 |  |  | 71 |  |  | 11,549 |
Ending balance |  | $ | 1,370 |  |  | $ | (1,865 | ) |  | $ | (495 | )
__________ (1) All amounts are net of tax. Amounts in parenthesis indicate debits. (2) See following table for details about these reclassifications.
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 nine month periods ended September 30, 2015 and 2014:
|  | Amount Reclassified from Accumulated Other Comprehensive Income (Loss) |  |
|  | Three Months Ended September 30, |  | Nine Months Ended September 30, |  | Affected line Item in the Consolidated
|  | 2015 |  | 2014 |  | 2015 |  | 2014 |  | Statement of Income
|  | (in thousands) |  |
Unrealized gains and losses on available-for-sale securities |  |  |  |  |  |  |  |  |  |
Investment securities gains |  | $ | 236 |  |  | $ | 33 |  |  | $ | 1,300 |  |  | $ | 552 |  |  | Investment securities gains, net
|  | 236 |  |  | 33 |  |  | 1,300 |  |  | 552 |  |  | Total before tax
|  | (85 | ) |  | (12 | ) |  | (471 | ) |  | (200 | ) |  | Income tax provision
|  | $ | 151 |  |  | $ | 21 |  |  | $ | 829 |  |  | $ | 352 |  |  | Net of tax
Amortization of pension plan liability |  |  |  |  |  |  |  |  |  |
Actuarial losses |  | $ | (97 | ) |  | $ | (36 | ) |  | $ | (240 | ) |  | $ | (111 | ) |  | Compensation and employee benefits
|  | (97 | ) |  | (36 | ) |  | (240 | ) |  | (111 | ) |  | Total before tax
|  | 35 |  |  | 13 |  |  | 87 |  |  | 40 |  |  | Income tax benefit
|  | $ | (62 | ) |  | $ | (23 | ) |  | $ | (153 | ) |  | $ | (71 | ) |  | 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=36458714&loc=SL7669686-108580 + Details
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