CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (Parentheticals) shares in Thousands	6 Months Ended
Apr. 02, 2016 shares
Retirement of treasury shares	1,356

Number of shares that have been repurchased and retired during the period.

No definition available.

Name:	arkr_RetirementOfTreasuryShares
Namespace Prefix:	arkr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration