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Other Liabilities, Long-Term Closed Restaurant Reserve (Details) (USD $)
6 Months Ended
Jun. 30, 2013
Other Liabilities Disclosure [Abstract]  
Restructuring Reserve, Noncurrent $ 1,200,000
Restructuring Reserve [Roll Forward]  
Restructuring Reserve, Beginning of Period 0
Provisions for restaurant closures 1,607,000
Payments for Restructuring (27,000)
Restructuring Reserve, End of Period $ 1,580,000