Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross carrying Amount	$ 454,755	$ 452,826
Accumulated amortization	237,207	193,884
Net carrying value	$ 217,548	$ 258,942
Weighted average life in years	8 years 6 months	8 years 6 months
Developed Technology Rights
Finite-Lived Intangible Assets [Line Items]
Gross carrying Amount	$ 202,591	$ 202,732
Accumulated amortization	126,077	102,883
Net carrying value	$ 76,514	$ 99,849
Weighted average life in years	6 years 8 months	6 years 8 months
Trademarks and Trade names
Finite-Lived Intangible Assets [Line Items]
Gross carrying Amount	$ 16,661	$ 16,676
Accumulated amortization	12,617	10,681
Net carrying value	$ 4,044	$ 5,995
Weighted average life in years	9 years 11 months	9 years 11 months
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying Amount	$ 216,918	$ 218,283
Accumulated amortization	90,581	72,948
Net carrying value	$ 126,337	$ 145,335
Weighted average life in years	10 years 4 months	10 years 4 months
Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Gross carrying Amount	$ 18,585	$ 15,135
Accumulated amortization	7,932	7,372
Net carrying value	$ 10,653	$ 7,763
Weighted average life in years	6 years 6 months	5 years 8 months