Related Party Transactions (Details)					1 Months Ended	3 Months Ended		12 Months Ended
	Oct. 14, 2015 USD ($) a Mcf bbl	Mar. 31, 2015 USD ($) shares	Jul. 01, 2014 USD ($)	May. 08, 2014 USD ($)	Oct. 31, 2015 shares	Mar. 31, 2016 USD ($) shares	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) shares	Aug. 04, 2015 shares	Aug. 03, 2015 shares
Related Party Transaction [Line Items]
Agreement term						15 years
Related parties, net receivable						$ 1,000,000			$ 1,500,000
Related parties, net payable						$ 3,000,000			$ 1,000,000
Cash payment for acquisition, net							$ 81,602,000
SP Holdings [Member]
Related Party Transaction [Line Items]
Percent of value of properties held used to compute quarterly fee						0.375%
Administrative fee								$ 1,000,000
Administrative fee paid			$ 500,000	$ 500,000		$ 1,400,000	900,000
Maximum asset acquisition, disposition and financing fee						2.00%
Agreement term						10 years
Services Agreement renewal term						10 years
Eagle Ford [Member]
Related Party Transaction [Line Items]
Initial purchase price		$ 85,000,000					85,000,000
Cash payment for acquisition		83,400,000
Eagle Ford [Member] | Sanchez Energy Corporation [Member]
Related Party Transaction [Line Items]
Initial purchase price		85,000,000					85,000,000
Closing adjustments		1,400,000
Cash payment for acquisition, net		$ 81,600,000
Western Catarina Midstream [Member]
Related Party Transaction [Line Items]
Agreement term	15 years
Acres dedicated for gathering | a	35,000
Gathering Agreement delivery commitment period	5 years
Proceeds from gathering and processing agreement						$ 9,600,000
Cash payment for acquisition	$ 345,800,000
Western Catarina Midstream [Member] | Oil [Member]
Related Party Transaction [Line Items]
Gathering Agreement minimum quarterly volume delivery commitment | bbl	10,200
Western Catarina Midstream [Member] | Natural Gas [Member]
Related Party Transaction [Line Items]
Gathering Agreement minimum quarterly volume delivery commitment | Mcf	142,000
Class A Preferred [Member] | Eagle Ford [Member]
Related Party Transaction [Line Items]
Business acquisition, units issued | shares		10,625,000
Common Units [Member]
Related Party Transaction [Line Items]
Common units, outstanding | shares						4,157,826			3,240,812	3,149,551	31,495,506
Common Units [Member] | Sanchez Energy Corporation [Member]
Related Party Transaction [Line Items]
Common units, outstanding | shares									0
Common Units [Member] | Eagle Ford [Member]
Related Party Transaction [Line Items]
Business acquisition, units issued | shares		105,263
Common Units [Member] | Eagle Ford [Member] | Sanchez Energy Corporation [Member]
Related Party Transaction [Line Items]
Business acquisition, units issued | shares		105,263
Business acquisition, value of units		$ 2,000,000					$ 2,000,000
Shares repurchased | shares					105,263