Net Income Per Limited Partnership Unit - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Partners Capital And Distributions [Line Items]
Number of units used in computing per unit amounts	8,751	8,751
Percentage of net income allocated General Partner	1.00%
Percentage of net income allocated limited partners	99.00%
Percentage of net loss allocated General Partner	24.00%
Percentage of net loss allocated limited partners	76.00%
Additional losses allocated to General Partner percentage	1.00%
Additional losses allocated to limited partners percentage	99.00%
Percentage of gain on sale and refinancing allocated to General Partner	1.00%
Percentage of gain on sale and refinancing allocated to limited partners	99.00%
Percentage of additional gain on sale and refinancing allocated to General Partner	24.00%
Percentage of additional gain on sale and refinancing allocated to limited partners	76.00%