- Major Components of Inventories (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Raw materials and purchased components	$ 194,108	$ 141,566
Service parts, garments and accessories	307,684	316,383
Finished goods	329,288	333,760
Less: reserves	(47,119)	(45,175)
Inventories	$ 783,961	$ 746,534