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Notes Payable - Components of Notes Payable (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Components of notes payable    
Total notes payable $ 500 $ 554
Less current portion of capital lease obligation   (54)
Non-current notes payable 500 500
Revolving Credit Facility
    
Components of notes payable    
Total notes payable 500 500
Capital Lease Obligations
    
Components of notes payable    
Total notes payable   $ 54