Net Income Per Limited Partnership Unit - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Earnings Per Share [Line Items]
Percentage of net income allocated to general partner	1.00%
Weighted average number of units outstanding to general partner	165,375	165,375
General Partner [Member]
Earnings Per Share [Line Items]
Percentage of net income allocated to general partner	1.00%
Percentage of gain on sale and refinancing allocated to General Partner	1.00%
Percentage of additional gain on sale and refinancing allocated to General Partner	12.00%
Limited Partners [Member]
Earnings Per Share [Line Items]
Percentage of net income attributable limited partners	99.00%
Percentage of gain on sale and refinancing allocated to limited partners	99.00%
Percentage of additional gain on sale and refinancing allocated to limited partners	88.00%