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Notes Payable - Additional Information (Detail) (Revolving Credit Facility One, USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Nov. 30, 2013
Line Of Credit Facility [Line Items]            
Revolving credit line           $ 10,000,000
Revolving credit agreement maturity date     Oct. 01, 2015      
Credit facility's interest rate, description     interest is being capitalized at the 30 day LIBOR rate plus 3.25% per annum      
Leverage test of total liabilities to total net worth 1.25   1.25      
Fixed Charge Coverage Ratio 1.00   1.00      
Borrowed under the agreement 500,000   500,000   500,000  
Additional borrowings available based on the Company's borrowing 7,000,000   7,000,000   7,900,000  
Interest capitalized $ 13,000 $ 0 $ 18,000 $ 0    
London Interbank Offered Rate (LIBOR)
            
Line Of Credit Facility [Line Items]            
Credit facility's interest rate, description     credit facility’s interest rate is London Interbank Offered Rate (“LIBOR”) (0.15% at June 30, 2014) plus 3.25% per annum      
Credit facility's interest rate     0.15%      
Credit facility, basis spread on variable rate     3.25%      
Commitment fee of the unused portion of the credit     0.30%