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		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 915	$ 2,534	$ 1,817	$ 3,809
Percentage of total revenue			100.00%	100.00%
Long-lived assets	4,741		4,741		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			1,817	3,746
Percentage of total revenue			100.00%	98.00%
Long-lived assets	4,741		4,741		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				63
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				63
Percentage of total revenue			0.00%	2.00%
Long-lived assets					$ 24
Percentage of long-lived assets	0.00%		0.00%		0.00%