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Leases Narrative (Details)	6 Months Ended
	Jul. 14, 2019
Lessee, Lease, Description [Line Items]
Term of lease extension	5 years
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	15 years
Maximum renewal term	20 years

X

- Definition

Leases, Remaining Lease Term

+ References

No definition available.

+ Details

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X

- Definition

Lessee, Leases, Renewal Term

+ References

No definition available.

+ Details

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Balance Type:	na
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X

- Definition

Lessee, Leases, Term Of Contract

+ References

No definition available.

+ Details

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Namespace Prefix:	rrgb_
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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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X

- Details

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X

- Details

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