Distributions To Unitholders (Details)					3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended	60 Months Ended
	May. 10, 2016 $ / shares	Feb. 29, 2016 $ / shares	Feb. 09, 2016 $ / shares	Nov. 30, 2015 $ / shares	Mar. 31, 2016 shares	Jun. 30, 2015 $ / shares	Dec. 31, 2009 $ / shares	Dec. 31, 2015 shares	Dec. 31, 2014 $ / shares
Paid-in-kind units distributed | shares								549,756
Class A preferred units converted to common shares, conversion ratio					1
Common Units [Member]
Distribution paid per unit		$ 0.406		$ 0.400		$ 0	$ 0		$ 0
Distribution declared per unit			$ 0.406
Common Units [Member] | Subsequent Event [Member]
Distribution declared per unit	$ 0.4121
Class A Preferred [Member]
Paid-in-kind units distributed | shares					0
Distributions declared as a percentage			2.50%
Distributions paid as a percentage		2.50%
Class B Preferred [Member]
Distribution paid per unit		$ 0.3815
Distribution declared per unit			$ 0.3815
Class B Preferred [Member] | Subsequent Event [Member]
Distribution declared per unit	$ 0.450