Transactions with General Partner and Its Affiliates (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Amounts paid and/or accrued to the General Partner and its affiliates
Management fees	$ 63,420	$ 61,466	$ 188,924	$ 183,507
Restoration fees		259	40
Other outsourced administrative fees	0	10	40	259
General Partner [Member]
Amounts paid and/or accrued to the General Partner and its affiliates
Management fees	63,420	61,466	188,924	183,507
Restoration fees	0	10	40	259
Overhead allowance	5,115	4,959	15,241	14,823
Other outsourced administrative fees	0	0	6,200	0
Lease Commissions	0	0	0	5,346
Reimbursement for out-of-pocket expenses	1,369	1,293	5,237	4,312
Cash distribution	1,102	1,065	1,546	1,777
Total general partner	$ 71,006	$ 68,793	$ 217,188	$ 210,024