Goodwill and Intangible Assets (Intangible Assets) (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 173,272	$ 101,158
Accumulated Amortization	40,764	30,442
Net Carrying Amount	132,508	70,716
Indefinite lived intangible assets	4,168	4,303
Total intangible assets	177,440	105,461
Other intangible assets	136,676	75,019
Trademarks and patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,825	2,543
Accumulated Amortization	1,156	718
Net Carrying Amount	5,669	1,825
Developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	68,880	47,724
Accumulated Amortization	24,365	19,681
Net Carrying Amount	44,515	28,043
Covenant-not-to-compete
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,419	943
Accumulated Amortization	932	943
Net Carrying Amount	487	0
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	96,148	49,948
Accumulated Amortization	14,311	9,100
Net Carrying Amount	$ 81,837	$ 40,848