Additional loans and advances to related party.

No definition available.

Name:	arkr_AdditionalLoansAndAdvancesToRelatedParty
Namespace Prefix:	arkr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Cost method investments ownership percentage.

+ References

No definition available.

+ Details

Name:	arkr_CostMethodInvestmentsOwnershipPercentage
Namespace Prefix:	arkr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

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Namespace Prefix:	arkr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Interest rate on loan.

+ References

No definition available.

+ Details

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Namespace Prefix:	arkr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Loan maturity date.

+ References

No definition available.

+ Details

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Namespace Prefix:	arkr_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Loans and advances to related party.

+ References

No definition available.

+ Details

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Namespace Prefix:	arkr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Maximum loss relating to Vies included in other current assets.

+ References

No definition available.

+ Details

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Namespace Prefix:	arkr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Principal and accrued interest included in other assets.

+ References

No definition available.

+ Details

Name:	arkr_PrincipalAndAccruedInterestIncludedInOtherAssets
Namespace Prefix:	arkr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Profit participation percentage.

+ References

No definition available.

+ Details

Name:	arkr_ProfitParticipationPercentage
Namespace Prefix:	arkr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow associated with the purchase of noncontrolling interest during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow associated with the acquisition of a controlling interest in another entity or an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, joint venture or equity method investment).

+ References

+ Details

Name:	us-gaap_PaymentsToAcquireBusinessesAndInterestInAffiliates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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Period Type:

- Details

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INVESTMENT IN AND RECEIVABLE FROM NEW MEADOWLANDS RACETRACK (Details) - USD ($)			1 Months Ended		12 Months Ended
	Feb. 07, 2017	Mar. 12, 2013	Apr. 25, 2014	Nov. 19, 2013	Sep. 29, 2018	Dec. 31, 2015	Sep. 30, 2017	Jul. 13, 2016
New Meadowlands Racetrack LLC [Member]
INVESTMENT IN AND RECEIVABLE FROM NEW MEADOWLANDS RACETRACK (Details) [Line Items]
Payments to Acquire Businesses and Interest in Affiliates		$ 4,200,000
Cost Method Investments Ownership Percentage				7.40%
Payments to Acquire Additional Interest in Subsidiaries	$ 222,000			$ 464,000		$ 222,000
Long-term Investments					$ 5,108,000
Meadowlands Newmark LLC [Member]
INVESTMENT IN AND RECEIVABLE FROM NEW MEADOWLANDS RACETRACK (Details) [Line Items]
Cost Method Investments Ownership Percentage		63.70%		11.60%
Loans and Advances to Related party			$ 1,500,000
Interest Rate on Loan			3.00%
Loan Maturity Date					Jan. 31, 2024
Additional Loans And Advances To Related Party								$ 200,000
Principal and Accrued Interest Included in Other Assets					$ 1,928,000		$ 1,871,000
Ark Meadowlands LLC [Member]
INVESTMENT IN AND RECEIVABLE FROM NEW MEADOWLANDS RACETRACK (Details) [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent					97.00%
Profit Participation Percentage					5.00%
Maximum Loss Relating to V I E Included In Other Current Assets					$ 0		$ 9,000