Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information Credit Agreement (Detail)

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Commitments and Contingencies - Additional Information Credit Agreement (Detail)
 3 Months Ended 6 Months Ended
Jun. 30, 2015
USD ($)
Jun. 30, 2014
USD ($)
Jun. 30, 2015
USD ($)
Ratio
Jun. 30, 2014
USD ($)
Line of Credit Facility [Line Items]        
Senior secured revolving credit facility maximum borrowing capacity $ 60,000,000   $ 60,000,000  
Revolving credit facility maturity date     Jun. 01, 2017  
Bank fees and other expenses 224,000   $ 224,000  
Credit agreement, unused capacity, commitment fee percentage     0.10%  
Commitment fee commencement date     Jul. 01, 2014  
Date the Company entered into a Credit Agreement     Jun. 18, 2014  
Credit agreement date     Jun. 01, 2014  
Interest expense 386,000 $ 401,000 $ 969,000 $ 805,000
Credit agreement, amount outstanding 0   0  
Standby letters of credit borrowing capacity 10,000,000   10,000,000  
Standby letters of credit, utilized amount 533,000   $ 533,000  
Credit facility interest rate description     Credit Facility will bear interest, at the Company's option, at either the (i) Base Rate (defined as the highest of (a) the Bank's prime rate, (b) the Federal Funds Rate plus 1.5% and (c) one-month LIBOR plus 1.5%), or (ii) at a variable rate between 0.875% and 1.125% above LIBOR, based upon the total funded debt to EBITDA ratio.  
LIBOR rate duration period     1 month  
Credit facility covenants     (i) an EBITDAR Coverage Ratio (as defined in the Credit Agreement) of not less than 1.251.0 as of each quarter end on a rolling 4-quarter basis and (ii) total funded debt to EBITDA not greater than 2.01.0  
Minimum EBITDAR coverage ratio | Ratio     1.25  
Maximum Total Funded Debt to EBITDA ratio | Ratio     2.0  
Credit agreement, pledge percentage     100.00%  
Compliance description     As of June 30, 2015, the Company was in compliance with all financial and non-financial covenants.  
London Interbank Offered Rate (LIBOR) [Member]        
Line of Credit Facility [Line Items]        
Base spread on variable rate     1.50%  
Credit Agreement [Member]        
Line of Credit Facility [Line Items]        
Interest expense $ 34,000 $ 6,000 $ 68,000 $ 6,000
Federal Funds Rate [Member]        
Line of Credit Facility [Line Items]        
Base spread on variable rate     1.50%  
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]        
Line of Credit Facility [Line Items]        
Base spread on variable rate     0.875%  
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]        
Line of Credit Facility [Line Items]        
Base spread on variable rate     1.125%