Transactions with General Partner and its Affiliates - Amounts paid and/or accrued to the General Partner and its Affiliates (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Related Party Transactions [Abstract]
Management fees	$ 65,679	$ 64,734	$ 196,407	$ 193,326
Overhead allowance	5,298	5,223	15,844	15,597
Other outsourced administrative fees	450	525	2,213	5,475
Sales and Leasing Commissions	0	6,160	0	22,456
Reimbursement for out-of-pocket expenses	923	1,240	3,071	4,164
Cash distribution	1,037	1,146	1,372	2,949
Total general partner	$ 73,387	$ 79,028	$ 218,907	$ 243,967