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Accumulated Other Comprehensive Loss (Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2016 | Mar. 31, 2015 | Dec. 31, 2015 | Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |
Beginning balance |  | $ (88,458) | $ (65,094) |  |
Other comprehensive income (loss) before reclassifications |  | 10,930 | (27,856) |  |
Amounts reclassified from accumulated other comprehensive loss (4) |  | 37 | 362 |  |
Other comprehensive income (loss) |  | 10,967 | (27,494) |  |
Ending balance |  | (77,491) | (92,588) |  |
AOCI, Pension and other postretirement benefit plans, tax |  | 9,860 | 11,807 | $ 9,879 | $ 11,952
AOCI, Cumulative changes in net gain (loss) from cash flow hedges, tax |  | 3 | 50 | $ 5 | $ 50
Foreign currency translation adjustments |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |
Beginning balance |  | (41,365) | (14,193) |  |
Other comprehensive income (loss) before reclassifications |  | 10,926 | (27,980) |  |
Amounts reclassified from accumulated other comprehensive loss (4) |  | 0 | 0 |  |
Other comprehensive income (loss) |  | 10,926 | (27,980) |  |
Ending balance |  | (30,439) | (42,173) |  |
Funded status of pension plans and other postretirement benefits |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |
Beginning balance | [1] | (47,082) | (50,808) |  |
Other comprehensive income (loss) before reclassifications | [1] | 0 | 0 |  |
Amounts reclassified from accumulated other comprehensive loss (4) | [1] | 35 | 268 |  |
Other comprehensive income (loss) | [1] | 35 | 268 |  |
Ending balance | [1] | (47,047) | (50,540) |  |
Reclassification from AOCI, Current Period, Tax |  | 19 | 144 |  |
Unrealized gain (loss) on derivative instruments |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |
Beginning balance | [2] | (11) | (93) |  |
Other comprehensive income (loss) before reclassifications | [2] | 4 | 124 |  |
Amounts reclassified from accumulated other comprehensive loss (4) | [2] | 2 | 94 |  |
Other comprehensive income (loss) | [2] | 6 | 218 |  |
Ending balance | [2] | (5) | 125 |  |
Reclassification from AOCI, Current Period, Tax |  | $ 1 | $ 51 |  |
[1] | Net of taxes of $11,807 and $11,952 as of March 31, 2015 and December 31, 2014, respectively. Net of taxes of $9,860 and $9,879 as of March 31, 2016, December 31, 2015, respectively.
[2] | Net of taxes of $3 and $5 as of March 31, 2016 and December 31, 2015, respectively. Net of taxes of $50 and $50 as of March 31, 2015 and December 31, 2014, respectively.

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- Definition Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Tax + References No definition available. + Details
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- Definition Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax + References No definition available. + Details
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- 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 Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 Reference 2: 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=66004124&loc=d3e681-108580 Reference 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=66004124&loc=SL7669686-108580 + Details
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- Definition Amount after tax, before reclassification adjustments of 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 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=66004921&loc=d3e1436-108581 Reference 2: 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=66004124&loc=SL7669686-108580 + Details
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