Consolidated Balance Sheets (Parenthetical) - shares	Dec. 31, 2015	Jul. 22, 2015	Apr. 10, 2015	Dec. 31, 2014	Sep. 26, 2014	Sep. 16, 2013
Common units, issued	109,979,218	10,350,000	4,600,000	95,029,218	4,600,000	5,750,000
Common units, outstanding	109,979,218			95,029,218