Quarterly report pursuant to Section 13 or 15(d)

Debt - Summary of Notes Payable (Detail)

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Debt - Summary of Notes Payable (Detail) (USD $)
In Thousands, unless otherwise specified
9 Months Ended 12 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Debt Instrument [Line Items]    
Total, Notes payable $ 8,127 $ 8,303
Notes Payable
   
Debt Instrument [Line Items]    
Principal on fixed rate notes, Interest Rate 5.00% 5.00%
Variable rate notes issued for redemption of partners' interests, reference rate Prime Prime
Variable rate notes issued for redemption of partners' interests, spread 1.00% 1.00%
Principal on fixed rate notes, Amount 2,475 2,665
Variable rate notes issued for redemption of partners' interests, Amount 5,300 5,486
Interest payable $ 352 $ 152