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Revenue (Schedule of Contract Balances) (Details) - USD ($)
$ in Thousands
Jun. 28, 2020
Dec. 31, 2019
Revenue From Contract With Customer [Abstract]    
Accounts receivable, net $ 277,490 $ 277,168
Contract liabilities - current 8,171 6,450
Contract liabilities - non-current $ 2,621 $ 2,061