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Executive Benefits Agreements and Employees Savings Plans - Executive Benefit Expenses (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Compensation Related Costs [Abstract]      
Costs (recovery of costs) associated with executive benefits included in SG&A, net $ (561) $ 166 $ (2)