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Long-Term Debt Senior Secured Second Lien Notes (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 02, 2017
Jan. 01, 2017
Debt Instrument, Redemption [Line Items]    
Carrols Restaurant Group Senior Secured Second Lien Notes $ 200,000 $ 200,000
Senior Secured Second Lien Notes, Interest Rate 8.00%  
Senior Notes, Amount Redeemable with Proceeds from Equity Offerings 35.00%  
Collateral exclusion for material subsidiaries, percentage of Senior Notes 20.00%  
Senior Notes, Cross Default Provision, Minimum Debt Principal Amount $ 20,000  
Debt Instrument, Redemption, Period Two [Member]    
Debt Instrument, Redemption [Line Items]    
Senior Notes, Redemption Price 104.00%  
Debt Instrument, Redemption, Period Three [Member]    
Debt Instrument, Redemption [Line Items]    
Senior Notes, Redemption Price 102.00%  
Debt Instrument, Redemption, Period Four [Member]    
Debt Instrument, Redemption [Line Items]    
Senior Notes, Redemption Price 100.00%