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Condensed Balance Sheets (Parenthetical) (USD $)
Mar. 31, 2013
Dec. 31, 2012
Statement Of Financial Position [Abstract]    
Accumulated amortized leasing commissions $ 1,669,186 $ 1,749,117
Accumulated amortized mortgage refinancing costs 2,279,752 2,188,848
Participation units, outstanding 700 700
Participation unit, par value $ 10,000 $ 10,000