Consolidated Statement of Partners' Capital (USD $) In Thousands	Total	Common Unit Holders	General Partner
Beginning Balance at Dec. 31, 2010	$ 128,191	$ 126,382	$ 1,809
Issuance of common units	264	264
Proceeds from public offering	103,207	103,207
General partner contribution	2,262		2,262
Compensation related to units awards	675	675
Net loss	(9,715)	(9,521)	(194)
Cash distributions	(44,605)	(42,920)	(1,685)
Ending Balance at Dec. 31, 2011	180,279	178,087	2,192
Issuance of common units	4,754	4,754
General partner contribution	89		89
Compensation related to units awards	527	527
Net loss	(3,013)	(2,953)	(60)
Cash distributions	(47,454)	(45,619)	(1,835)
Ending Balance at Dec. 31, 2012	135,182	134,796	386
Issuance of common units	3,718	3,718
Proceeds from public offering	38,377	38,377
Compensation related to units awards	1,328	1,328
Net loss	(19,032)	(18,682)	(350)
Cash distributions	(52,053)	(49,880)	(2,173)
Ending Balance at Dec. 31, 2013	$ 107,520	$ 109,657	$ (2,137)