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Notes Payable and Credit Agreement - Summary of Aggregate Annual Payments of Principal Required to Revolving Credit Facility (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Long Term Debt By Maturity [Abstract]    
During the twelve months ended March 31, 2015 $ 775  
During the twelve months ended March 31, 2016 450  
During the twelve months ended March 31, 2019 45,500  
Payments/Long term debt, Total $ 46,725 $ 41,475