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Other Selling and Administrative Expenses (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Other Income and Expenses [Abstract]        
Design and development $ 46,486 $ 52,186 $ 91,113 $ 94,631
Identifiable intangible asset amortization $ 9,687 $ 9,909 $ 19,652 $ 20,338