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STOCK OPTIONS (Details) (USD $)
3 Months Ended
Dec. 27, 2014
Dec. 28, 2013
STOCK OPTIONS (Details) [Line Items]    
Number of Stock Option Plans 2arkr_NumberOfStockOptionPlans  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period 136,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod  
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price $ 29.60us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice  
Share-based Compensation $ 105,000us-gaap_ShareBasedCompensation $ 80,000us-gaap_ShareBasedCompensation
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options $ 608,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 1 year 6 months  
Stock Option 2004 Plan [Member]    
STOCK OPTIONS (Details) [Line Items]    
Terminated Unissued Options 400arkr_TerminatedUnissuedOptions
/ us-gaap_AwardTypeAxis
= arkr_StockOption2004PlanMember
 
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 10 years  
Stock Option 2010 Plan [Member]    
STOCK OPTIONS (Details) [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 10 years  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= arkr_StockOption2010PlanMember