Quarterly report pursuant to Section 13 or 15(d)

Product Warranty (Reconciliation Of Product Warranties) (Details)

v3.10.0.1
Product Warranty (Reconciliation Of Product Warranties) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Reconciliation of Product Warranty Accrual [Roll Forward]        
Balance at beginning of period $ 11,857 $ 11,213 $ 12,339 $ 11,455
Provision for warranty claims 555 1,373 2,997 3,304
Warranty claims (378) (877) (3,088) (3,365)
Other 50 108 (164) 423
Balance at end of period $ 12,084 $ 11,817 $ 12,084 $ 11,817