Note I - Closure and Impairments Expense (Details) - Future Liabilites Associated with Closed Properties (USD $) In Thousands, unless otherwise specified	3 Months Ended
Sep. 02, 2014
Future Liabilites Associated with Closed Properties [Abstract]
Balance at June 3, 2014	$ 10,873
Closing expense including rent and other lease charges	466
Payments	(1,326)
Other adjustments	13
Balance at September 2, 2014	$ 10,026

Amount of cash paid during the period to settle lease obligations associated with closed properties.

No definition available.

Name:	rt_PaymentsClosedPropertyLeaseObligation
Namespace Prefix:	rt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration