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SUBSEQUENT EVENT (Detail) (USD $)	Feb. 06, 2013
Offered price for purchase of all outstanding stock, per share	$ 22

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- Definition

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+ Details

Name:	arkr_OfferedPriceForPurchaseOfAllOutstandingStockPerShare
Namespace Prefix:	arkr_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant