XML 89 R76.htm IDEA: XBRL DOCUMENT v3.8.0.1
WARRANTY (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Product Warranties Disclosures [Abstract]    
Warranty liability, January 1 $ 17,926 $ 23,121
Provision for warranty liabilities 9,012 7,459
Warranty payments made (8,326) (12,654)
Warranty liability, December 31 $ 18,612 $ 17,926