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Stockholders' Equity (Deficit) - Shares Authorized and Outstanding (Details) - shares
Dec. 31, 2017
Dec. 25, 2016
Stockholders' Equity (Deficit)    
Authorized shares of preferred stock 5,000,000  
Authorized shares of common stock 100,000,000  
Outstanding shares of common stock , net of repurchased stock 33,900,000 36,700,000
Preferred shares issued 0 0
Preferred shares outstanding 0 0