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Other Comprehensive Income (Tables) | 3 Months Ended
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Mar. 31, 2014
Other Comprehensive Income [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | Changes in AOCI by component for the three months ended March 31, 2014 are summarized as follows:
|  | Defined Benefit Plans |  | Derivative Instruments |  | Foreign Currency Translation |  | Total
|  | (dollars in thousands)
Balance, December 31, 2013 |  | $ | (10,840 | ) |  | $ | 1,060 |  |  | $ | 37,610 |  |  | $ | 27,830 |
Net unrealized gains arising during the period |  | — |  |  | 200 |  |  | 1,880 |  |  | 2,080 |
Less: Net realized (losses) reclassified to net income (a) |  | (180 | ) |  | (110 | ) |  | — |  |  | (290 | )
Net current-period change |  | 180 |  |  | 310 |  |  | 1,880 |  |  | 2,370 |
Balance, March 31, 2014 |  | $ | (10,660 | ) |  | $ | 1,370 |  |  | $ | 39,490 |  |  | $ | 30,200 |

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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=28358780&loc=SL7669686-108580 + Details
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