Condensed Consolidated Statements Of Partners' Capital - Partner Type of Partners' Capital Account, Name [Domain] - USD ($) $ in Thousands	Total	Number Of Common Units [Member]
Partners' capital, January 1, units at Dec. 31, 2013	88,691,000
Partners' Capital Account, Sale of Units	$ 0
Net income	50,923	$ 0
Cash distributions	$ 96,236	$ 0
Partners' Capital Account, Units, Sale of Units		0
Partners' capital, March 31, units at Jun. 30, 2014	88,691,000
Partners' capital, March 31, value at Jun. 30, 2014	$ 1,052,424
Partners' capital, January 1, units at Dec. 31, 2014	95,029,218
Partners' Capital Account, Sale of Units	$ 197,722
Net income	31,880	$ 0
Cash distributions	$ 117,316	$ 0
Partners' Capital Account, Units, Sale of Units		4,600,000
Partners' capital, March 31, units at Jun. 30, 2015	99,629,218
Partners' capital, March 31, value at Jun. 30, 2015	$ 1,341,489