Summary of Significant Accounting Policies - Components of Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounting Policies [Abstract]
Retirement benefit assets	$ 6,721	$ 3,336
Deferred compensation benefits	29,222	28,488
Investments	28,793	28,351
Cash surrender value of life insurance policies	106,251	105,213
Customer sales returns inventories	68,160	72,814
Guarantees related to borrowings	42,000	35,000
Other long-term prepayments and receivables	194,383	187,716
Total other assets	$ 475,530	$ 460,918