Quarterly report pursuant to Section 13 or 15(d)

Product Warranties - Summary of Activity in Warranty Accrual (Details)

v3.8.0.1
Product Warranties - Summary of Activity in Warranty Accrual (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Apr. 01, 2017
Movement in Standard Product Warranty Accrual [Roll Forward]    
Balance at Beginning of Period $ 5,136 $ 4,675
Warranties Issued 567 467
Warranties Settled (640) (707)
Reassessed Warranty Exposure 52 (78)
Balance at End of Period $ 5,115 $ 4,357
Minimum    
Product Liability Contingency [Line Items]    
Product warranty period 12 months  
Maximum    
Product Liability Contingency [Line Items]    
Product warranty period 60 months