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Condensed Balance Sheets (Unaudited) (Parenthetical) (USD $)
Mar. 31, 2012
Dec. 31, 2011
Condensed Balance Sheets [Abstract]    
Leasing commissions, less accumulated amortization $ 1,522,605 $ 1,444,673
Mortgage refinancing costs, less accumulated amortization 1,916,135 1,825,231
Participation units, outstanding 700 700
Amount of participation unit $ 10,000 $ 10,000