Income Taxes - Deferred Income Taxes Reflect Temporary Differences Between the Valuation of Assets and Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]    
Tax loss and credit carry forwards $ 62,142 $ 40,007
Unremitted earnings 0 0
Unconsolidated affiliates 11,761 12,257
Other accruals and reserves 11,536 13,556
Property, plant and equipment 0 0
Goodwill and other intangible assets 15,791 23,452
Deferred financing fees 6,366 6,973
Employee benefits 41,186 31,858
Deferred tax assets, gross 148,782 128,103
Valuation allowance (66,920) (50,404)
Deferred tax assets, net 81,862 77,699
Tax loss and credit carry forwards 0 0
Unremitted earnings 9,273 9,462
Unconsolidated affiliates 0 0
Other accruals and reserves 0 0
Property, plant and equipment 42,715 45,314
Goodwill and other intangible assets 0 0
Deferred financing fees 0 0
Employee benefits 0 0
Deferred tax liabilities, gross 51,988 54,776
Valuation allowance 0 0
Deferred tax liabilities, net $ 51,988 $ 54,776