Quarterly report pursuant to Section 13 or 15(d)

Product Warranty (Reconciliation Of Product Warranties) (Details)

v3.8.0.1
Product Warranty (Reconciliation Of Product Warranties) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Reconciliation of Product Warranty Accrual [Roll Forward]    
Balance at beginning of period $ 12,339 $ 11,455
Provision for warranty claims 1,248 1,200
Warranty claims (1,589) (1,299)
Other 68 147
Balance at end of period $ 12,066 $ 11,503