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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Statement of Comprehensive Income [Abstract] |  |  |
Net income (loss) | $ (59,310) | $ 126,474 | $ (40,313)
Other comprehensive income (loss) before income tax effect: |  |  |
Net gain on foreign currency cash flow hedges reclassified as income | (186) | (186) | (186)
Defined benefit plans and other postretirement benefits: |  |  |
Net gain (loss) arising during the period | 5,553 | (41,995) | 56,795
Prior service benefit (cost) arising during the period | 1,758 | (1,299) | 0
Amortization of prior service benefit during the period | (8,351) | (3,504) | (3,920)
Amortization of actuarial net loss during the period | 7,794 | 10,312 | 8,174
Change in equity in investee other comprehensive income | 0 | 0 | 61
Other comprehensive income (loss) before income tax effect | 6,568 | (36,672) | 60,924
Income tax effect | (1,536) | (1,829) | (1,564)
Other comprehensive income (loss) | 5,032 | (38,501) | 59,360
Total comprehensive income (loss) | $ (54,278) | $ 87,973 | $ 19,047

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