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LONG-TERM DEBT - Additional Information (Detail) (USD $)
1 Months Ended 6 Months Ended
Jun. 11, 2013
Dec. 25, 2012
Oct. 15, 2012
Three-year unsecured revolving credit facility [Member]
Jun. 11, 2013
Three-year unsecured revolving credit facility [Member]
Proforma Debt Instrument [Line Items]        
Revolving credit facility     $ 25,000,000  
Credit facility maturity date       3 years
LIBOR interest rate       Borrowings under the new credit facility bear interest at a rate of LIBOR plus 1.50%.
Basis spread on variable rate     1.50%  
Percentage of commitment fee paid on unused revolving loan facility       0.25%
Revolving credit facility, amount outstanding 0 0    
Borrowings available under revolving credit facility 24,200,000 24,200,000    
Total outstanding letter of credit commitments $ 761,000 $ 761,000