Debt - Total Amount of Interest Expense and Fees Recognized on Borrowing (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Debt Disclosure [Abstract]
Interest expense and fees	$ 3,472	$ 616	$ 6,839	$ 1,272