Acquisitions (Unaudited Pro Forma Financial Information) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Acquisitions [Abstract]
Revenues	[1]	$ 84,416	$ 42,615
Income (loss) from operations	[1]	34,907	(35,451)
Income (loss) available to common stockholders	[1]	$ 47,963	$ (38,908)
Net income (loss) per common share Basic	[1]	$ 0.24	$ (0.31)
Net income (loss) per common share Diluted	[1]	$ 0.24	$ (0.31)

[1] The pro forma financial information was prepared assuming the Ameredev Transaction occurred as of January 1, 2016 and the Plymouth Transaction and Big Star Transaction occurred as of January 1, 2015.