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Long-Term Debt (Details) (USD $)
0 Months Ended 6 Months Ended
Jun. 17, 2014
Mar. 25, 2014
Dec. 31, 2013
Oct. 15, 2012
Three-Year Unsecured Revolving Credit Facility [Member]
Jun. 17, 2014
Three-Year Unsecured Revolving Credit Facility [Member]
Proforma Debt Instrument [Line Items]          
Credit facility maturity date       3 years  
Revolving credit facility       $ 25,000,000  
LIBOR interest rate         Borrowings under the 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 0    
Borrowings available under revolving credit facility 24,100,000        
Outstanding letters of credit, revolving credit facility $ 861,000   $ 761,000