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Warranties (Details) - USD ($)
$ in Thousands
6 Months Ended
Mar. 31, 2017
Apr. 01, 2016
Warranties [Abstract]    
Product Warranty Accrual, Balance at beginning of period $ 4,326 $ 4,301
Expense accruals for warranties issued during the period 3,173 2,337
Less current period warranty claims paid 1,956 1,903
Product Warranty Accrual, Balance at end of period $ 5,543 $ 4,735