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STOCK OPTIONS (Details) - Schedule of Share-based Compensation, Activity (USD $)
 12 Months Ended
Sep. 27, 2014
Sep. 28, 2013
Sep. 29, 2012
STOCK OPTIONS (Details) - Schedule of Share-based Compensation, Activity [Line Items]      
Options Outstanding, Number of Shares 704,161us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber [1] 623,100us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber [1] 648,100us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Options Outstanding, Weighted Average Exercise Price (in Dollars per share) $ 21.66us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice [1] $ 19.69us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice [1] $ 19.56us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Options Outstanding, Weighted Average Remaining contractual life 5 years 255 days    
Options Exercisable, Number of Shares 498,661us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber [1] 503,950us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber [1]  
Options Exercisable, Weighted Average Exercise Price (in Dollars per share) $ 21.31us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice [1] $ 20.95us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice [1]  
Options Exercisable, Weighted Average Remaining contractual life 4 years 36 days [1]    
Range of Exercise Prices One [Member]      
STOCK OPTIONS (Details) - Schedule of Share-based Compensation, Activity [Line Items]      
Options Outstanding, Number of Shares 96,361us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesOneMember		    
Options Outstanding, Weighted Average Exercise Price (in Dollars per share) $ 12.04us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesOneMember		    
Options Outstanding, Weighted Average Remaining contractual life 4 years 219 days    
Options Exercisable, Number of Shares 96,361us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesOneMember		    
Options Exercisable, Weighted Average Exercise Price (in Dollars per share) $ 12.04us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesOneMember		    
Options Exercisable, Weighted Average Remaining contractual life 4 years 219 days    
Range Of Exercise Prices Two [Member]      
STOCK OPTIONS (Details) - Schedule of Share-based Compensation, Activity [Line Items]      
Options Outstanding, Number of Shares 175,800us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesTwoMember		    
Options Outstanding, Weighted Average Exercise Price (in Dollars per share) $ 14.40us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesTwoMember		    
Options Outstanding, Weighted Average Remaining contractual life 7 years 255 days    
Options Exercisable, Number of Shares 175,800us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesTwoMember		    
Options Exercisable, Weighted Average Exercise Price (in Dollars per share) $ 14.40us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesTwoMember		    
Options Exercisable, Weighted Average Remaining contractual life 7 years 255 days    
Range Of Exercise Prices Three [Member]      
STOCK OPTIONS (Details) - Schedule of Share-based Compensation, Activity [Line Items]      
Options Outstanding, Number of Shares 205,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesThreeMember		    
Options Outstanding, Weighted Average Exercise Price (in Dollars per share) $ 22.50us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesThreeMember		    
Options Outstanding, Weighted Average Remaining contractual life 9 years 255 days    
Options Exercisable, Weighted Average Exercise Price (in Dollars per share) $ 22.50us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesThreeMember		    
Options Exercisable, Weighted Average Remaining contractual life 9 years 255 days    
Range Of Exercise Prices Four [Member]      
STOCK OPTIONS (Details) - Schedule of Share-based Compensation, Activity [Line Items]      
Options Outstanding, Number of Shares 136,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesFourMember		    
Options Outstanding, Weighted Average Exercise Price (in Dollars per share) $ 29.60us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesFourMember		    
Options Outstanding, Weighted Average Remaining contractual life 73 days    
Options Exercisable, Number of Shares 136,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesFourMember		    
Options Exercisable, Weighted Average Exercise Price (in Dollars per share) $ 29.60us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesFourMember		    
Options Exercisable, Weighted Average Remaining contractual life 73 days    
Range of Exercise Prices Five [Member]      
STOCK OPTIONS (Details) - Schedule of Share-based Compensation, Activity [Line Items]      
Options Outstanding, Number of Shares 90,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesFiveMember		    
Options Outstanding, Weighted Average Exercise Price (in Dollars per share) $ 32.15us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesFiveMember		    
Options Outstanding, Weighted Average Remaining contractual life 2 years 73 days    
Options Exercisable, Number of Shares 90,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesFiveMember		    
Options Exercisable, Weighted Average Exercise Price (in Dollars per share) $ 32.15us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ arkr_RangeOfExercisePriceAxis
= arkr_RangeOfExercisePricesFiveMember		    
Options Exercisable, Weighted Average Remaining contractual life 2 years 73 days    
[1] Options become exercisable at various times and expire at various dates through 2024.