Description of the Business - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
	Apr. 30, 2013	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2013
Business Acquisition [Line Items]
Proceeds from sale of business	$ 54,500
Proceed from sale of business, cash	52,500			$ 42,587
Sale of business non-cash consideration	$ 2,000
Period of free service provided	3 years
Divestiture related costs included in gain on sale of business	$ 2,400
Payment from escrow fund			$ 1,290
Tinet global data business
Business Acquisition [Line Items]
Payment from escrow fund		$ 1,300