Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance for obsolete inventory
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 48,343	$ 47,119	$ 45,175
Additions Charged to Costs and Expenses	21,930	11,565	36,150
Additions Through Acquisition	454	1,947	0
Other Changes Add (Deduct)	(14,067)	(12,288)	(34,206)
Balance at End of Period	56,660	48,343	47,119
Allowance for doubtful accounts receivable
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	9,451	10,914	19,439
Additions Charged to Costs and Expenses	767	1,058	(965)
Additions Through Acquisition	0	60	0
Other Changes Add (Deduct)	(878)	(2,581)	(7,560)
Balance at End of Period	$ 9,340	$ 9,451	$ 10,914