Members' Equity/Partners' Capital (EPU) (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	2 Months Ended		3 Months Ended
	Mar. 05, 2015	Mar. 31, 2015	Mar. 05, 2015	Feb. 28, 2015	Mar. 31, 2016	Mar. 31, 2015
Assumed net income (loss)		$ (89,063)	$ (923)		$ (10,739)	$ (89,986)
Net income (loss) per unit - Basic and diluted		$ 28.90
Asset impairments	$ 0			$ 0	$ 1,309	$ 82,865
Class A Unit [Member]
Weighted Average Units Outstanding - Basic and diluted						48,451
Assumed net income (loss)			$ (18)
Net income (loss) per unit - Basic and diluted			$ (0.38)			$ (0.38)
Class B Unit [Member]
Weighted Average Units Outstanding - Basic and diluted						2,879,163
Assumed net income (loss)			$ (905)
Net income (loss) per unit - Basic and diluted			$ (0.31)			$ (0.31)
Common Units [Member]
Weighted Average Units Outstanding - Basic and diluted					2,743,419	2,992,801
Assumed net income (loss)					$ (10,739)
Net income (loss) per unit - Basic and diluted					$ (3.91)	$ 29.76
Prior To Stock Split [Member]
Weighted Average Units Outstanding - Basic and diluted		2,992,801	2,927,613		2,743,419
Prior To Stock Split [Member] | Class A Unit [Member]
Weighted Average Units Outstanding - Basic and diluted			48,451
Prior To Stock Split [Member] | Class B Unit [Member]
Weighted Average Units Outstanding - Basic and diluted			2,879,163
Prior To Stock Split [Member] | Common Units [Member]
Weighted Average Units Outstanding - Basic and diluted		2,992,801			2,743,419