Investments in Unconsolidated Entities Summarized Financial Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]
Revenues	$ 72,393	$ 44,015	$ 30,608
Operating income (loss)	9,878	1,196	(2,533)
Income from continuing operations	4,603	(2,382)	(3,616)
Net income	4,598	(2,382)	$ (4,670)
Equity Method Investment, Summarized Financial Information, Assets [Abstract]
Current assets	47,294	44,951
Non-current assets	346,550	257,022
Total assets	393,844	301,973
Equity Method Investment, Summarized Financial Information, Liabilities [Abstract]
Current liabilities	22,274	22,217
Non-current liabilities	143,769	104,344
Total liabilities	$ 166,043	$ 126,561