Acquisitions - Additional Information (Detail) (USD $)	0 Months Ended
	Oct. 07, 2013
HBN
Business Acquisition [Line Items]
Purchase consideration	$ 7,130,000
Business acquisition date	Oct. 07, 2013
Tails Inc.
Business Acquisition [Line Items]
Purchase consideration	$ 20,175,000
Business acquisition date	Oct. 07, 2013