CONSOLIDATED STATEMENTS OF INCOME (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues
Rental income									$ 35,244,008	$ 33,608,799	$ 31,816,175
Laundry and sundry income									388,401	426,803	439,782
Total Revenues	9,104,015	8,875,596	8,800,416	8,852,382	8,760,538	8,648,526	8,345,643	8,280,894	35,632,409	34,035,602	32,255,957
Expenses
Administrative									1,825,951	1,707,408	1,772,599
Depreciation and amortization									6,092,725	5,910,746	5,531,509
Management fee									1,446,620	1,404,467	1,330,157
Operating									3,633,619	4,080,647	3,784,401
Renting									183,529	365,110	528,686
Repairs and maintenance									5,179,408	5,056,054	4,886,724
Taxes and insurance									4,348,492	4,146,554	4,082,588
Total Expenses	5,704,596	5,730,319	5,413,735	5,861,694	5,722,971	5,665,232	5,508,842	5,773,941	22,710,344	22,670,986	21,916,664
Income Before Other Income (loss) and Discontinued Operations	3,399,419	3,145,277	3,386,681	2,990,688	3,037,567	2,983,294	2,836,801	2,506,953	12,922,065	11,364,616	10,339,293
Other Income (Loss)
Interest income									2,216	3,861	5,932
Interest expense									(7,802,999)	(7,965,422)	(8,053,628)
(Loss) from investments in unconsolidated joint ventures									(1,487,484)	(1,913,800)	(3,869,996)
Other (loss)											(700)
Total Other Income (Expense)	(2,214,288)	(2,370,824)	(2,339,420)	(2,363,735)	(2,469,002)	(2,523,314)	(2,480,305)	(2,402,740)	(9,288,267)	(9,875,361)	(11,918,392)
Income (loss) From Continuing Operations									3,633,798	1,489,255	(1,579,099)
Discontinued Operations
Income from discontinued operations										81,567	219,867
Gain on the sale of real estate										7,720,459
Total Discontinued Operations					(308)	(3,054)	7,736,789	68,599		7,802,026	219,867
Net Income (loss)	$ 1,185,131	$ 774,453	$ 1,047,261	$ 626,953	$ 568,257	$ 456,926	$ 8,093,285	$ 172,812	$ 3,633,798	$ 9,291,281	$ (1,359,232)
Income (loss) per Unit
Income (loss) before discontinued operations (in dollars per unit)	$ 9.07	$ 5.90	$ 7.97	$ 4.77	$ 4.33	$ 3.50	$ 2.71	$ 0.79	$ 27.69	$ 11.33	$ (11.99)
Income from discontinued operations (in dollars per unit)						$ (0.02)	$ 58.84	$ 0.52		$ 59.34	$ 1.67
Net Income per Unit (in dollars per unit)	$ 9.07	$ 5.90	$ 7.97	$ 4.77	$ 4.33	$ 3.48	$ 61.55	$ 1.31	$ 27.69	$ 70.67	$ (10.32)
Weighted Average Number of Units Outstanding (in units)									131,230	131,484	131,696