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Preliminary Allocation of Consideration Paid and Estimated Fair Value of Assets Acquired and Liabilities Assumed (Detail) (USD $) In Thousands, unless otherwise specified	0 Months Ended
	Nov. 03, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Recognized amounts of identifiable assets acquired and liabilities assumed:
Goodwill		$ 264,186us-gaap_Goodwill	$ 90,466us-gaap_Goodwill	$ 87,926us-gaap_Goodwill
FolioDynamix
Consideration:
Cash consideration (including $0.7 million of working capital adjustment paid in 2015)	201,699
Fair value of stock options of FolioDynamix	4,125
Business acquisition, consideration transferred	205,824
Recognized amounts of identifiable assets acquired and liabilities assumed:
Financial assets	9,324
Property, plant and equipment	1,581
Financial liabilities	(13,640)
Contingent consideration	(1,870)
Deferred tax liability	(1,585)
Total identifiable net assets	40,410
Goodwill	165,414
Purchase price allocation assets acquired	205,824
FolioDynamix \| Customer lists
Recognized amounts of identifiable assets acquired and liabilities assumed:
Intangible assets	23,300
FolioDynamix \| Trademarks/trade names
Recognized amounts of identifiable assets acquired and liabilities assumed:
Intangible assets	8,100
FolioDynamix \| Technology
Recognized amounts of identifiable assets acquired and liabilities assumed:
Intangible assets	$ 15,200