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Organization and Significant Accounting Policies - Major Components of Inventories (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Accounting Policies [Abstract]    
Raw materials and purchased components $ 533,500 $ 344,600
Service parts, garments and accessories 330,500 357,000
Finished goods 381,300 476,200
Less: reserves (67,700) (56,700)
Inventories $ 1,177,600 $ 1,121,100