Summary of Significant Accounting Policies (Summary of Geographic Information Relating to Sources, by Nation, of Partnership's Total Revenue and Long-Lived Assets) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 902	$ 1,275
Percentage of total revenue	100.00%	100.00%
Long-lived assets	5,062		5,521
Percentage of long lived assets	100.00%		100.00%
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	902	1,243
Percentage of total revenue	100.00%	97.00%
Long-lived assets	5,062		5,497
Percentage of long lived assets	100.00%		100.00%
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		32
Percentage of total revenue	0.00%	3.00%
Long-lived assets			24
Percentage of long lived assets	0.00%		0.00%
Total International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		32
Percentage of total revenue	0.00%	3.00%
Long-lived assets			$ 24
Percentage of long lived assets	0.00%		0.00%