Acquisitions - Additional Information (Detail) - USD ($)			12 Months Ended
	Sep. 29, 2015	Mar. 31, 2015	Jan. 31, 2017
Zinc Ahead Inc [Member]
Business Acquisition [Line Items]
Business acquisition date			Sep. 29, 2015
Closing cash consideration for purchase	$ 119,935,000
Business acquisition deferred consideration			$ 4,800,000
Business acquisition deferred consideration payment period	3 years
Deferred consideration annual payment rate	33.33%
Business acquisition-related transaction costs			$ 2,200,000
In-process research and development	$ 0
Qforma CrowdLink [Member]
Business Acquisition [Line Items]
Business acquisition date			Mar. 31, 2015
Closing cash consideration for purchase		$ 9,750,000
Business acquisition-related transaction costs			$ 400,000
In-process research and development		$ 0
Contingent cash payments			$ 0
Maximum [Member]
Business Acquisition [Line Items]
Measurement period for goodwill adjustment			1 year