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Commitments and Contingencies (Details 2)	Dec. 31, 2012
Required Ratio [Member]
Financial covenants related to amended subordination and guaranty agreement
Minimum consolidated liquidity ratio	1.05
Minimum consolidated fixed charge coverage ratio	1.20
Maximum consolidated total lease adjusted leverage ratio	5.50
Minimum EBTDAR to rent ratio	1.50
Actual Ratio [Member]
Financial covenants related to amended subordination and guaranty agreement
Minimum consolidated liquidity ratio	1.15
Minimum consolidated fixed charge coverage ratio	1.69
Maximum consolidated total lease adjusted leverage ratio	3.94
Minimum EBTDAR to rent ratio	3.14