Business Combinations - Unaudited Pro Forma Supplemental Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Business Combinations [Abstract]
Acquisition-related costs	$ 0	$ 8,500	$ 0	$ 11,153
Loss on debt extinguishment	$ 0	10,449	$ 0	10,449
Other one-time fees and expenses		$ 9,200		$ 9,200