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Employee Retirement Plans (Tables) | 9 Months Ended
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Sep. 30, 2013
Compensation and Retirement Disclosure [Abstract] |
Schedule of Net Benefit Costs [Table Text Block] | The components of the Company’s net pension expense were as follows:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30, |
|  | 2013 |  | 2012 |  | 2013 |  | 2012 |
|  | (Dollars in thousands) |
Benefits earned during the period |  | $ | 447 |  | $ | 352 |  | $ | 1,279 |  | $ | 1,120 |
Interest cost on projected benefit obligation |  |  | 608 |  |  | 571 |  |  | 1,794 |  |  | 1,746 |
Expected return on plan assets |  |  | (525) |  |  | (510) |  |  | (1,569) |  |  | (1,484) |
Net amortization and deferral |  |  | 440 |  |  | 356 |  |  | 1,262 |  |  | 1,256 |
Net pension expense |  | $ | 970 |  | $ | 769 |  | $ | 2,766 |  | $ | 2,638 |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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