Statements of Changes in Partners' Capital (USD $) In Thousands, except Share data	Limited Partner [Member]	General Partner [Member]	Total
Beginning Balance at Dec. 31, 2011	$ 3,845		$ 3,845
Beginning Balance (in units) at Dec. 31, 2011	12,478,676
Distributions to Limited Partners ($0.08 per Unit)	(998)		(998)
Distributions to General Partners		(10)	(10)
Net income	1,147	10	1,157
Ending Balance at Dec. 31, 2012	3,994		3,994
Ending Balance (in units) at Dec. 31, 2012	12,478,676
Net income	434		434
Ending Balance at Jun. 30, 2013	$ 4,428		$ 4,428
Ending Balance (in units) at Jun. 30, 2013	12,478,676