Annual report pursuant to section 13 and 15(d)

Debt - Summary of Notes Payable (Detail)

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Debt - Summary of Notes Payable (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Debt Instrument [Line Items]    
Total, Notes payable $ 8,303 $ 3,315
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 2,665 2,397
Variable rate notes issued for redemption of partners' interests, Amount 5,486 872
Interest payable $ 152 $ 46