QUARTERLY OPERATING RESULTS (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
QUARTERLY OPERATING RESULTS (Unaudited)
Revenues	$ 9,586	$ 6,254	$ 745	$ 3,522	$ 9,115	$ 6,008	$ 384	$ 2,487	$ 7,624	$ 4,702	$ 626	$ 2,348	$ 20,107	$ 17,994	$ 15,300
Gross Income (Loss)	1,378	1,169	213	836	1,402	722	109	585	(284)	453	48	372	3,596	2,818	589
Net Income (Loss)	$ 10	$ 296	$ (797)	$ (8)	$ 559	$ 38	$ 66	$ 49	$ (1,036)	$ (308)	$ (118)	$ (25)	$ (499)	$ 712	$ (1,487)
Net Income (Loss) per Class A Unit	$ 0.00	$ 0.04	$ (0.11)	$ 0.00	$ 0.07	$ 0.01	$ 0.01	$ 0.01	$ (0.14)	$ (0.04)	$ (0.02)	$ 0.00	$ (0.07)	$ 0.09	$ (0.20)

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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- Definition

The portion of profit or loss for the period which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

-Paragraph 38

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Net income (loss) allocated to each outstanding limited partnership unit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187171-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 4

-Section F

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- Definition

Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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