CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS (Parentheticals) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Dec. 31, 2011	Jan. 01, 2011
Revenues related to VIEs	$ 5,044	$ 4,767
Costs and expenses related to VIEs	$ 4,080	$ 4,046

Total costs of sales and operating expenses for the period related to VIEs.

No definition available.

Name:	arkr_CostsAndExpensesRelatedToVIEs
Namespace Prefix:	arkr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration