SUBSEQUENT EVENTS (Details) (USD $)	3 Months Ended		9 Months Ended		1 Months Ended		3 Months Ended		1 Months Ended
	Feb. 28, 2012	Mar. 01, 2011	Feb. 28, 2012	Mar. 01, 2011	Mar. 31, 2012 Sale Leaseback Transaction [Member]	Feb. 28, 2012 Acquisition - Lime Fresh Mexican Grills [Member]	Feb. 28, 2012 Impairment in Value of Asset [Member]	Apr. 03, 2012 Impairment in Value of Asset [Member]	Apr. 04, 2012 Time-based restricted shares of common stock [Member]
Sale-leaseback transaction [Abstract]
Number of restaurants					8	7
Sale-leaseback transaction, gross proceeds					$ 17,500,000
Sale-leaseback transaction, costs					800,000
Sale-leaseback transaction, carrying value					13,600,000
Sale-leaseback transaction, lease terms (in years)					15Y
Sale-leaseback transaction, lease renewal terms (in years)					20Y
Sale-leaseback transaction, deferred gain					3,100,000
Acquisition of Lime Fresh Mexican Grill Restaurants [Abstract]
Number of franchised restaurant royalty stream acquisitions						5
Acquisition price						24,000,000
Number of restaurants excluded from purchase which will continue to operate as a franchisee of RTI						1
Number of restaurants excluded from purchase which will continue to operate under license by existing franchisees						4
Restaurant Closures [Abstract]
Number of restaurants approved in plan to be closed, minimum								25
Number of restaurants approved in plan to be closed, maximum								27
Number of restaurants planned to be closed following expiration of lease								10
Property impairments	$ 11,534,000	$ 888,000	$ 12,370,000	$ 2,226,000			$ 9,600,000
Share-Based Employee Compensation [Abstract]
Grant of restricted shares of common stock (in shares)									220,750
Vesting period of restricted shares of common stock, minimum (in years)									3Y
Vesting period of restricted shares of common stock, maximum (in years)									5Y