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Other Selling and Administrative Expenses (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Other Income and Expenses [Abstract]        
Design and development $ 56,684 $ 53,748 $ 108,496 $ 105,584
Identifiable intangible asset amortization $ 4,412 $ 5,537 $ 8,601 $ 10,830