| **Accumulated Other Comprehensive Income (Details) (USD $)In Thousands, unless otherwise specified**                                         | 3 Months Ended |
|----------------------------------------------------------------------------------------------------------------------------------------------|----------------|
||
| **Increase (Decrease) in Stockholders' Equity [Roll Forward]**                                                                               |           |   |
| AOCI - beginning balance                                                                                                                     | $ (5,499)      | $ (3,602) |
| Other comprehensive income before reclassifications                                                                                          | (1,850)        | 270 |
| Amounts reclassified from accumulated other comprehensive income                                                                             | 601            | 7 |
| Other Comprehensive Income, net of tax                                                                                                       | (1,249)        | 277 |
| AOCI - ending balance                                                                                                                        | (6,748)        | (3,325) |
| Net unrealized gain on securities available for sale                                                                                         |           |   |
| **Increase (Decrease) in Stockholders' Equity [Roll Forward]**                                                                               |           |   |
| AOCI - beginning balance                                                                                                                     | 17,904         | 18,244 |
| Other comprehensive income before reclassifications                                                                                          | (2,115)        | (20) |
| Amounts reclassified from accumulated other comprehensive income                                                                             | (161)          | (513) |
| Other Comprehensive Income, net of tax                                                                                                       | (2,276)        | (533) |
| AOCI - ending balance                                                                                                                        | 15,628         | 17,711 |
| Net unrealized loss on securities available for sale for which a portion of an other-than-temporary impairment has been recognized in income |           |   |
| **Increase (Decrease) in Stockholders' Equity [Roll Forward]**                                                                               |           |   |
| AOCI - beginning balance                                                                                                                     | (3,272)        | (3,168) |
| Other comprehensive income before reclassifications                                                                                          | 72             | (14) |
| Amounts reclassified from accumulated other comprehensive income                                                                             |      |    |
| Other Comprehensive Income, net of tax                                                                                                       | 72             | (14) |
| AOCI - ending balance                                                                                                                        | (3,200)        | (3,182) |
| Net unrealized loss on cash flow hedges                                                                                                      |           |   |
| **Increase (Decrease) in Stockholders' Equity [Roll Forward]**                                                                               |           |   |
| AOCI - beginning balance                                                                                                                     | (2,652)        | (1,841) |
| Other comprehensive income before reclassifications                                                                                          | 193            | 304 |
| Amounts reclassified from accumulated other comprehensive income                                                                             | 122            |    |
| Other Comprehensive Income, net of tax                                                                                                       | 315            | 304 |
| AOCI - ending balance                                                                                                                        | (2,337)        | (1,537) |
| Defined benefit plans                                                                                                                        |           |   |
| **Increase (Decrease) in Stockholders' Equity [Roll Forward]**                                                                               |           |   |
| AOCI - beginning balance                                                                                                                     | (17,479)       | (16,837) |
| Other comprehensive income before reclassifications                                                                                          |      |    |
| Amounts reclassified from accumulated other comprehensive income                                                                             | 640            | 520 |
| Other Comprehensive Income, net of tax                                                                                                       | 640            | 520 |
| AOCI - ending balance                                                                                                                        | $ (16,839)     | $ (16,317) |

| X                                                                                                                                                                                                                                                                                                                          |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                           |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 26 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e637-108580Reference 3: 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=20435746&loc=SL7669686-108580Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e681-108580Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 15D -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Net of tax amount of other comprehensive income (loss) attributable to both parent entity and noncontrolling interest.
+ References
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