Unaudited Condensed Consolidated Statements of Partners' Capital - USD ($) $ in Thousands	Total	Common Units	Subordinated Units	Limited Partners Common Units	Limited Partners Subordinated Units
Beginning Balance at Dec. 31, 2017	$ 675,826			$ 421,161	$ 254,665
Beginning Balance (in units) at Dec. 31, 2017				77,644,489	64,954,691
Net loss	(21,569)			$ (9,789)	$ (11,780)
Cash distributions	(4,510)			$ (4,510)
Conversion of warrants, net				2,135,493
Equity-based compensation	177			$ 177
Issuance of equity-based awards				46,556
Distribution equivalent rights on LTIP awards	(21)			$ (21)
Ending Balance at Mar. 31, 2018	649,903			$ 407,018	$ 242,885
Ending Balance (in units) at Mar. 31, 2018				79,826,538	64,954,691
Beginning Balance at Dec. 31, 2018	596,715	$ 377,880	$ 218,835	$ 377,880	$ 218,835
Beginning Balance (in units) at Dec. 31, 2018				80,844,319	64,954,691
Net loss	(16,821)			$ (7,168)	$ (9,653)
Cash distributions	(4,856)			$ (4,856)
Conversion of warrants, net				10,087
Equity-based compensation	233			$ 233
Issuance of equity-based awards				84,815
Distribution equivalent rights on LTIP awards	(25)			$ (25)
Ending Balance at Mar. 31, 2019	$ 575,246	$ 366,064	$ 209,182	$ 366,064	$ 209,182
Ending Balance (in units) at Mar. 31, 2019				80,939,221	64,954,691