Members Equity Partners Capital (Class B Preferred Units) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Mezzanine equity beginning balance	$ 172,111
Distributions	7,418
Total mezzanine equity	179,763	$ 172,111
Class B Preferred [Member]
Mezzanine equity beginning balance	172,111
Private placement of Class B Preferred Units		$ 350,000
Discount	(83)	(191,901)
Amortization of discount	6,403	6,594
Distributions	8,750	7,418
Distributions paid	(7,418)
Total mezzanine equity	$ 179,763	$ 172,111