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Notes Payable - Summary of Aggregate Annual Payments of Principal Required to Revolving Credit Facility (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Long Term Debt By Maturity [Abstract]    
During the twelve months ended September 30, 2014 $ 825  
During the twelve months ended September 30, 2015 650  
During the twelve months ended September 30, 2018 0  
Payments/Long term debt, Total $ 41,475 $ 18,034