XML 53 R28.htm IDEA: XBRL DOCUMENT v3.19.3

Leases Narrative (Details)	9 Months Ended
	Oct. 06, 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

Name:	rrgb_LeasesRemainingLeaseTerm
Namespace Prefix:	rrgb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Lessee, Leases, Renewal Term

+ References

No definition available.

+ Details

Name:	rrgb_LesseeLeasesRenewalTerm
Namespace Prefix:	rrgb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Lessee, Leases, Term Of Contract

+ References

No definition available.

+ Details

Name:	rrgb_LesseeLeasesTermOfContract
Namespace Prefix:	rrgb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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

Name:	us-gaap_LesseeLeaseDescriptionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: