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Other Selling and Administrative Expenses (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Other Income and Expenses [Abstract]        
Design and development $ 45,495 $ 48,811 $ 136,609 $ 143,441
Identifiable intangible asset amortization $ 9,813 $ 9,824 $ 29,465 $ 30,162