Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	May 31, 2012	May 31, 2011	May 31, 2012	May 31, 2011
Revenues:
Company Drive-In sales	$ 110,070	$ 113,745	$ 294,037	$ 297,454
Franchise Drive-Ins:
Franchise royalties	35,599	34,825	89,980	88,650
Franchise fees	202	385	851	1,271
Lease revenue	2,056	1,828	4,605	4,347
Other	1,500	1,315	3,317	3,045
Total revenues	149,427	152,098	392,790	394,767
Costs and expenses:
Food and packaging	30,600	31,996	83,011	83,559
Payroll and other employee benefits	38,539	40,466	106,363	108,741
Other operating expenses, exclusive of depreciation and amortization included below	22,261	23,549	65,899	66,765
Total costs and expenses	91,400	96,011	255,273	259,065
Selling, general and administrative	16,951	17,212	48,452	48,778
Depreciation and amortization	10,288	10,139	31,264	30,806
Provision for impairment of long-lived assets	203	49	376	313
Total operating expenses	118,842	123,411	335,365	338,962
Other operating income (expense), net	151	(20)	613	255
Income from operations	30,736	28,667	58,038	56,060
Interest expense	7,836	7,991	23,807	24,414
Interest income	(174)	(161)	(477)	(513)
Net loss from early extinguishment of debt		28,230		23,025
Net interest expense	7,662	36,060	23,330	46,926
Income (loss) before income taxes	23,074	(7,393)	34,708	9,134
Provision (benefit) for income taxes	8,667	(2,742)	13,125	2,195
Net income (loss)	$ 14,407	$ (4,651)	$ 21,583	$ 6,939
Basic income (loss) per share	$ 0.24	$ (0.08)	$ 0.36	$ 0.11
Diluted income (loss) per share	$ 0.24	$ (0.08)	$ 0.36	$ 0.11