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		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 1,071	$ 1,086	$ 2,888	$ 4,895
Percentage of total revenue			100.00%	100.00%
Long-lived assets	4,655		4,655		5,521
Percentage of long-lived assets	100.00%		100.00%		100.00%
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues			2,888	4,821
Percentage of total revenue			100.00%	98.00%
Long-lived assets	4,655		4,655		5,497
Percentage of long-lived assets	100.00%		100.00%		100.00%
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues				74
Percentage of total revenue			0.00%	2.00%
Long-lived assets					24
Percentage of long-lived assets	0.00%		0.00%		0.00%
Total International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues				74
Percentage of total revenue			0.00%	2.00%
Long-lived assets					$ 24
Percentage of long-lived assets	0.00%		0.00%		0.00%