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Employee Benefit Plans - Summary of Severance Associated with Cost Reduction Programs (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]  
Severance expenses payable, opening balance $ 14,056q_SeverancePayables
Severance expense, net of reversals (1,665)q_SeveranceExpenseReversalsNet
Severance payments (6,036)q_SeverancePayments
Severance foreign currency translation (81)q_SeverancePayablesTranslationAdjustment
Severance expenses payable, ending balance $ 6,274q_SeverancePayables