No definition available.

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- Definition

Lease expiration year.

+ References

No definition available.

+ Details

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Data Type:	xbrli:gYearItemType
Balance Type:	na
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- Definition

The aggregate costs related to construction and development services during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Balance Type:	debit
Period Type:	duration

- Definition

Impairment losses measured as the amount by which the carrying amount of the business or real estate partnerships exceeds the fair value of the business or partnership.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Date which lease or group of leases is set to expire, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

+ Details

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Period Type:	duration

- Definition

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 55
-Paragraph 40
-Subparagraph (Note 3)
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-SubTopic 20
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717

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Balance Type:	credit
Period Type:	instant

- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
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- Details

Name:	us-gaap_BusinessAcquisitionAxis=arkr_SequoiaDcMember
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COMMITMENTS AND CONTINGENCIES (Details) - USD ($)	3 Months Ended
COMMITMENTS AND CONTINGENCIES (Details) - USD ($)	Dec. 30, 2017	Dec. 31, 2016	Jul. 05, 2016
COMMITMENTS AND CONTINGENCIES (Details) [Line Items]
Lease Expiration Year	2032
Stock Repurchased During Period, Shares	0	0
Maximum [Member]
COMMITMENTS AND CONTINGENCIES (Details) [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased			500,000
Sequoia DC [Member]
COMMITMENTS AND CONTINGENCIES (Details) [Line Items]
Lessee, Operating Lease, Renewal Term	15 years
Lease Expiration Date	Nov. 30, 2032
Operating Leases, Future Minimum Payments Due	$ 1,200,000
Impairment Losses Related to Real Estate Partnerships		$ 283,000
Sequoia DC [Member] \| Additional Lease Extension Option [Member]
COMMITMENTS AND CONTINGENCIES (Details) [Line Items]
Lessee, Operating Lease, Renewal Term	5 years
Sequoia DC [Member] \| Leasehold Improvements [Member]
COMMITMENTS AND CONTINGENCIES (Details) [Line Items]
Construction and Development Costs	$ 11,000,000