Subsequent Events - Additional Information (Detail) $ in Millions		9 Months Ended
	Nov. 02, 2015 USD ($) employee	Sep. 30, 2015
Subsequent Event [Line Items]
Subsequent events evaluation date		Nov. 04, 2015
Subsequent Event [Member] | Alliance Tech [Member]
Subsequent Event [Line Items]
Purchase consideration, cash paid at closing	$ 11.5
Number of employees required to meet continuing employment requirements | employee	3
Subsequent Event [Member] | Alliance Tech [Member] | Earnout Provisions [Member]
Subsequent Event [Line Items]
Contingent deferred payments	$ 1.1
Subsequent Event [Member] | Alliance Tech [Member] | Key Employee Continued Employment Requirements [Member]
Subsequent Event [Line Items]
Contingent deferred payments	$ 2.1