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Accrued Expenses And Other Liabilities (Components Of Accrued Expenses And Other Liabilities) (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Payables and Accruals [Abstract]    
Accrued compensation $ 37,607 $ 43,761
Customer deposits and deferred revenue 43,212 34,571
Current portion of accrued warranty 16,974 15,711
Other 7,944 8,442
Total $ 105,737 $ 102,485