Employee Benefit Plans - Actual Fair Values of U.S. Pension Plans (Detail) - U.S. Plans [Member] - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Carrying Amount	$ 167,947	$ 172,119
Estimated Fair Value Measurements	167,947	172,119	$ 201,011
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Carrying Amount	2,097	5,998
Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Carrying Amount	54,722	51,906
United States [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Carrying Amount	77,611	80,823
International Countries [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Carrying Amount	33,517	33,392
Quoted Prices in Active Markets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Fair Value Measurements	165,850	166,121
Quoted Prices in Active Markets (Level 1) [Member] | Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Fair Value Measurements	54,722	51,906
Quoted Prices in Active Markets (Level 1) [Member] | United States [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Fair Value Measurements	77,611	80,823
Quoted Prices in Active Markets (Level 1) [Member] | International Countries [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Fair Value Measurements	33,517	33,392
Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Fair Value Measurements	2,097	5,998
Significant Other Observable Inputs (Level 2) [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Fair Value Measurements	$ 2,097	$ 5,998