Condensed Consolidated Statements Of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014
Revenues:
Company Drive-In sales	$ 118,369	$ 111,014	$ 310,816	$ 286,361
Franchise Drive-Ins:
Franchise royalties and fees	43,704	38,795	114,375	96,598
Lease revenue	1,569	1,081	3,613	2,682
Other	1,106	1,297	2,019	2,939
Total revenues	164,748	152,187	430,823	388,580
Costs and expenses:
Food and packaging	32,727	32,175	87,128	81,454
Payroll and other employee benefits	40,898	37,737	110,049	101,108
Other operating expenses, exclusive of depreciation and amortization included below	22,955	21,805	65,484	62,049
Total cost of Company Drive-In sales	96,580	91,717	262,661	244,611
Selling, general and administrative	20,699	17,639	57,625	50,530
Depreciation and amortization	11,435	11,022	34,634	31,087
Other operating (income) expense, net	(336)	128	4	(37)
Total costs and expenses	128,378	120,506	354,924	326,191
Income from operations	36,370	31,681	75,899	62,389
Interest expense	6,382	6,328	18,981	19,095
Interest income	(91)	(112)	(290)	(373)
Net interest expense	6,291	6,216	18,691	18,722
Income before income taxes	30,079	25,465	57,208	43,667
Provision for income taxes	9,637	8,689	19,019	14,576
Net income	$ 20,442	$ 16,776	$ 38,189	$ 29,091
Basic income per share	$ 0.39	$ 0.31	$ 0.72	$ 0.52
Diluted income per share	$ 0.38	$ 0.30	$ 0.70	$ 0.51