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Accumulated Other Comprehensive Income (Tables) | 9 Months Ended
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Sep. 30, 2014
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | Changes in accumulated other comprehensive income (loss) by component for the nine months ended September 30, 2014 and 2013 were as follows:
|  | Benefits Liability, Net of Tax |  | Cumulative Foreign Currency Exchange |  | Net Unrealized Holding Gains on Investments, Net of Tax |  | Total
Balances at December 31, 2013 |  | $ | (6,696 | ) |  | $ | 3,904 |  |  | $ | 176 |  |  | $ | (2,616 | )
Other comprehensive (loss) income before reclassifications |  | (39 | ) |  | (37,882 | ) |  | 4,459 |  |  | (33,462 | )
Amounts reclassified from accumulated other comprehensive loss |  | 422 |  |  | — |  |  | (777 | ) |  | (355 | )
Net other comprehensive income (loss) for the period |  | 383 |  |  | (37,882 | ) |  | 3,682 |  |  | (33,817 | )
Balances at September 30, 2014 |  | $ | (6,313 | ) |  | $ | (33,978 | ) |  | $ | 3,858 |  |  | $ | (36,433 | )
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] | The following table provides the details of the amounts reclassified from accumulated other comprehensive income (loss) into net income in the consolidated statements of operations for the three and nine months ended September 30, 2014 and 2013:
Details about Accumulated Other Comprehensive Income (Loss) Components |  | Location of Reclassification (Income (Expense)) in Consolidated Statements of Operations |  | Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2014 |  | 2013 |  | 2014 |  | 2013
Amortization of pension and other post-retirement items |  |  |  |  |  |  |  |  |  |
Prior service costs |  | (1) |  | $ | (87 | ) |  | $ | (95 | ) |  | $ | (261 | ) |  | $ | (286 | )
Net loss |  | (1) |  | (153 | ) |  | (600 | ) |  | (424 | ) |  | (1,718 | )
|  |  |  | (240 | ) |  | (695 | ) |  | (685 | ) |  | (2,004 | )
|  | Provision for income taxes |  | 92 |  |  | 267 |  |  | 263 |  |  | 771 |
|  |  |  | (148 | ) |  | (428 | ) |  | (422 | ) |  | (1,233 | )
Net unrealized gains on available-for-sale investments |  |  |  |  |  |  |  |  |  |
Realized gain on available-for-sale investments |  | Other income, net |  | — |  |  | — |  |  | 1,212 |  |  | — |
|  | Provision for income taxes |  | — |  |  | — |  |  | (435 | ) |  | — |
|  |  |  | — |  |  | — |  |  | $ | 777 |  |  | $ | — |
Total reclassifications for the period |  |  |  | $ | (148 | ) |  | $ | (428 | ) |  | $ | 355 |  |  | $ | (1,233 | )
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(1) | These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost. For additional information, please read Note 10 (Employee Benefits) to the financial statements included in the 2013 Form 10-K.

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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=28358780&loc=SL7669686-108580 + Details
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