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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 26, 2015 | Dec. 27, 2014
Statement of Comprehensive Income [Abstract] |  |  |
Net income | $ 156,366 | $ 151,087 | $ 128,198
Other comprehensive income (loss): |  |  |
Foreign currency translation adjustment and other | (73,243) | (61,982) | (48,955)
Cumulative translation adjustment related to intercompany loan forgiveness | 0 | (2,341) | 0
Pension and other post-retirement benefit plans (Note 10): |  |  |
Prior service cost and gains (losses) arising during the period | (60,678) | (302) | (42,236)
Amortization of net gains (losses) and prior service benefit included in net periodic pension cost | 1,711 | 2,617 | 1,234
Comprehensive income, before income taxes | 24,156 | 89,079 | 38,241
Income tax expense (benefit) related to items of other comprehensive income (Note 8) | (12,369) | 530 | (9,897)
Comprehensive income, net of income taxes | 36,525 | 88,549 | 48,138
Less: Comprehensive income (loss) related to noncontrolling interests, net of income taxes | (24) | 537 | 1,044
Comprehensive income attributable to common shareholders, net of income taxes | $ 36,549 | $ 88,012 | $ 47,094

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