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Provision for Income Taxes - Additional Information (Detail)
6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Income Tax Disclosure [Abstract]    
State and Local effective income tax rate 22.00% 32.00%
U.S. federal statutory rate 34.00%  
Non-U.S. based earnings being taxed at lower rates reducing the effective rate (8.00%) (2.00%)