Debt - Total Amount of Interest Expense and Fees Recognized on Borrowing (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Debt Disclosure [Abstract]
Interest expense and fees	$ 3,466	$ 431	$ 10,305	$ 1,703