NET (LOSS) INCOME PER LIMITED PARTNER UNIT AND DISTRIBUTIONS (Distributions) (Details) (USD $)	3 Months Ended					0 Months Ended		3 Months Ended					1 Months Ended	3 Months Ended				1 Months Ended	3 Months Ended				2 Months Ended	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2014 General Partner [Member]	Jun. 30, 2013 General Partner [Member]	May 15, 2013 General Partner [Member]	Apr. 12, 2013 General Partner [Member]	May 15, 2013 Preferred units issued	Apr. 12, 2013 Preferred units issued	Mar. 31, 2014 Preferred units issued item	Jun. 30, 2013 Preferred units issued	Mar. 31, 2014 Preferred units issued General Partner [Member]	Mar. 31, 2014 PIK distribution Preferred units issued	Jun. 30, 2013 In Kind Distribution [Member]	Jun. 30, 2013 In Kind Distribution [Member] Preferred units issued	Mar. 31, 2014 In Kind Distribution [Member] Preferred units issued	Dec. 31, 2013 In Kind Distribution [Member] Preferred units issued	Sep. 30, 2013 In Kind Distribution [Member] Preferred units issued	Jun. 30, 2013 In Kind Distribution [Member] Preferred units issued	Jun. 30, 2013 In Kind Distribution [Member] Preferred units issued General Partner [Member]	Mar. 31, 2014 In Kind Distribution [Member] Preferred units issued General Partner [Member]	Dec. 31, 2013 In Kind Distribution [Member] Preferred units issued General Partner [Member]	Sep. 30, 2013 In Kind Distribution [Member] Preferred units issued General Partner [Member]	Jun. 30, 2013 In Kind Distribution [Member] Preferred units issued General Partner [Member]	Dec. 31, 2012 Cash	Mar. 31, 2014 Cash	Dec. 31, 2013 Cash	Sep. 30, 2013 Cash	Jun. 30, 2013 Cash	Mar. 31, 2013 Cash	Dec. 31, 2012 Cash	Mar. 31, 2014 Cash General Partner [Member]	Dec. 31, 2013 Cash General Partner [Member]	Sep. 30, 2013 Cash General Partner [Member]	Jun. 30, 2013 Cash General Partner [Member]	Mar. 31, 2013 Cash General Partner [Member]	Dec. 31, 2012 Cash General Partner [Member]	Mar. 31, 2014 Cash Limited Partner, units authorized Limited Partners	Dec. 31, 2013 Cash Limited Partner, units authorized Limited Partners	Sep. 30, 2013 Cash Limited Partner, units authorized Limited Partners	Jun. 30, 2013 Cash Limited Partner, units authorized Limited Partners	Mar. 31, 2013 Cash Limited Partner, units authorized Limited Partners	Dec. 31, 2012 Cash Limited Partner, units authorized Limited Partners	Mar. 31, 2014 Cash Subordinated Units [Member] Limited Partners	Dec. 31, 2013 Cash Subordinated Units [Member] Limited Partners	Sep. 30, 2013 Cash Subordinated Units [Member] Limited Partners	Jun. 30, 2013 Cash Subordinated Units [Member] Limited Partners	Mar. 31, 2013 Cash Subordinated Units [Member] Limited Partners	Dec. 31, 2012 Cash Subordinated Units [Member] Limited Partners	Dec. 31, 2012 Cash Preferred units issued	Mar. 31, 2014 Maximum [Member] Cash	Jun. 30, 2013 QTD In Kind Distribution [Member]	Jun. 30, 2013 YTD In Kind Distribution [Member]	Mar. 13, 2014 Credit Facility, due November 2017	Jun. 30, 2013 Credit Facility, due November 2017	Mar. 27, 2013 Credit Facility, due November 2017	Nov. 07, 2012 Credit Facility, due November 2017
Distributions made to Limited Partner [Line Items]
Distribution period																																																	45 days
Amount raised through issuance of units									$ 40,000,000
Preferred Units, Issued							1,715,000
Preferred units issued						248,675	1,466,325		1,500,000
unused borrowings																																																				350,000,000.0	350,000,000.0	250,000,000.0	350,000,000.0
Number of quarters for quarterly distributions in-kind required to be paid								4
Distribution percentage											7.00%
Ownership interest held by general partners (as a percent)	2.00%	2.00%	2.00%							2.00%
Minimum quarterly distribution (in dollars per unit)	$ 0.40							$ 0.40				$ 0.40											$ 0.24	$ 0.4	$ 0.4	$ 0.4	$ 0.4	$ 0.4	$ 0.40
Minimum annual distribution (in dollars per unit)																																																$ 1.60			$ 1.60
Series A preferred units , PIK distribution earned
Per Unit Distribution (in dollars per unit)													$ 0.20	$ 0.4	$ 0.40	$ 0.40	$ 0.35
In-Kind Unit Distribution (in dollars)													2,199,000	31,513,000	30,971,000	30,439,000	22,276,000	45,000	643,000	632,000	621,000	454,000
In-Kind Distributions (in dollars per unit)	0	(11,000)											51,000	534,000	558,000	511,000	512,000	1,000	11,000	11,000	10,000	10,000
Common units, distribution declared and paid
Distribution Made to Member or Limited Partner, Distribution Paid in Cash																								$ 13,761,000	$ 13,755,000	$ 9,987,000	$ 9,986,000	$ 9,973,000	$ 5,982,000	$ 290,000	$ 289,000	$ 214,000	$ 210,000	$ 199,000	$ 120,000	$ 8,586,000	$ 8,581,000	$ 4,888,000	$ 4,890,000	$ 4,888,000	$ 2,931,000	$ 4,885,000	$ 4,885,000	$ 4,885,000	$ 4,886,000	$ 4,886,000	$ 2,931,000
General partner units issued (in shares)				5,075	29,925
Distribution Made to Limited Partner, Distributions Paid, Per Unit												$ 0.20																	$ 0.24																					$ 0.40	$ 1.60