Related Party Transactions - Activity of Related Party Transactions (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Related Party Transactions [Abstract]
Revenues	$ 10,745	$ 8,392	$ 20,140
Costs and services	10,808	8,351	$ 4,819
Accounts receivable	797	1,022
Accounts payable	$ 254	$ 0