XML 53 R42.htm IDEA: XBRL DOCUMENT v3.5.0.2
Guarantees (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Guarantees [Abstract]    
Standard warranty period (in years) 1 year  
Movement in Standard Product Warranty Accrual [Roll Forward]    
Beginning balance $ 2,509 $ 2,286
Provision for warranties 2,380 2,850
Claims made (2,653) (2,682)
Ending balance $ 2,236 $ 2,454