XML 72 R59.htm IDEA: XBRL DOCUMENT
v3.20.4

STOCK OPTIONS - Schedule of stock options, outstanding (Details) - $ / shares | 12 Months Ended |  |
--- | --- | --- | ---
Oct. 03, 2020 | Sep. 28, 2019 | Sep. 29, 2018
Options Outstanding |  |  |
Number of Shares (in Shares) | 626,500 | 363,500 | 378,500
Weighted Average Exercise Price (in Dollars per share) | $ 20.41 | $ 19.25 | $ 18.46
Weighted Average Remaining Contractual Life | 6 years 1 month 6 days |  |
Options Exercisable |  |  |
Number of Shares (in Shares) | 351,750 | 328,500 |
Weighted Average Exercise Price (in Dollars per share) | $ 19.28 | $ 19.11 |
Weighted Average Remaining contractual Life | 3 years 6 months |  |
Range of Exercise Prices - $14.40 |  |  |
Options Outstanding |  |  |
Number of Shares (in Shares) | 129,000 |  |
Weighted Average Exercise Price (in Dollars per share) | $ 14.40 |  |
Weighted Average Remaining Contractual Life | 1 year 8 months 12 days |  |
Options Exercisable |  |  |
Number of Shares (in Shares) | 129,000 |  |
Weighted Average Exercise Price (in Dollars per share) | $ 14.40 |  |
Weighted Average Remaining contractual Life | 1 year 8 months 12 days |  |
Range of Exercise Prices - $21.90 |  |  |
Options Outstanding |  |  |
Number of Shares (in Shares) | 266,500 |  |
Weighted Average Exercise Price (in Dollars per share) | $ 21.90 |  |
Weighted Average Remaining Contractual Life | 9 years 3 months 18 days |  |
Options Exercisable |  |  |
Number of Shares (in Shares) | 0 |  |
Weighted Average Exercise Price (in Dollars per share) | $ 21.90 |  |
Weighted Average Remaining contractual Life | 9 years 3 months 18 days |  |
Range of Exercise Prices - $22.50 |  |  |
Options Outstanding |  |  |
Number of Shares (in Shares) | 172,000 |  |
Weighted Average Exercise Price (in Dollars per share) | $ 22.50 |  |
Weighted Average Remaining Contractual Life | 3 years 8 months 12 days |  |
Options Exercisable |  |  |
Number of Shares (in Shares) | 172,000 |  |
Weighted Average Exercise Price (in Dollars per share) | $ 22.50 |  |
Weighted Average Remaining contractual Life | 3 years 8 months 12 days |  |
Range of Exercise Prices - $19.61 - $22.30 |  |  |
STOCK OPTIONS (Details) - Schedule of stock options, outstanding [Line Items] |  |  |
Range of exercise price, lower limit (in Dollars per share) | $ 19.61 |  |
Range of exercise price, upper limit (in Dollars per share) | $ 22.30 |  |
Options Outstanding |  |  |
Number of Shares (in Shares) | 59,000 |  |
Weighted Average Exercise Price (in Dollars per share) | $ 20.69 |  |
Weighted Average Remaining Contractual Life | 8 years 2 months 12 days |  |
Options Exercisable |  |  |
Number of Shares (in Shares) | 50,750 |  |
Weighted Average Exercise Price (in Dollars per share) | $ 20.81 |  |
Weighted Average Remaining contractual Life | 8 years 2 months 12 days |  |

X
- References No definition available. + Details
Name: | arkr_STOCKOPTIONSDetailsScheduleofstockoptionsoutstandingLineItems
Namespace Prefix: | arkr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable + References No definition available. + Details
Name: | arkr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableAbstract
Namespace Prefix: | arkr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding + References No definition available. + Details
Name: | arkr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAbstract
Namespace Prefix: | arkr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average remaining contractual term for option awards outstanding and exercisable, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | arkr_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionOutstandingAndExercisableWeightedAverageRemainingContractualTerm
Namespace Prefix: | arkr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=arkr_RangeOfExercisePricesOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=arkr_RangeOfExercisePricesTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=arkr_RangeOfExercisePricesThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=arkr_RangeOfExercisePricesFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |