Condensed Consolidated Statements Of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2018	May 31, 2017	May 31, 2018	May 31, 2017
Revenues:
Company Drive-In sales	$ 66,587	$ 72,062	$ 182,217	$ 223,500
Franchise Drive-Ins:
Franchise royalties and fees	48,251	48,220	122,766	122,687
Lease revenue	2,203	2,418	5,288	5,474
Other	1,265	1,290	1,565	2,038
Total revenues	118,306	123,990	311,836	353,699
Costs and expenses:
Food and packaging	18,549	19,380	50,863	61,112
Payroll and other employee benefits	23,468	25,590	67,325	82,688
Other operating expenses, exclusive of depreciation and amortization included below	12,354	13,836	37,303	47,540
Total cost of Company Drive-In sales	54,371	58,806	155,491	191,340
Selling, general and administrative	21,118	20,763	57,733	58,813
Depreciation and amortization	9,566	9,520	28,492	29,531
Other operating income, net	(4,010)	(540)	(4,503)	(11,105)
Total costs and expenses	81,045	88,549	237,213	268,579
Income from operations	37,261	35,441	74,623	85,120
Interest expense	8,598	7,318	24,411	21,734
Interest income	(524)	(291)	(1,361)	(1,047)
Loss from debt transactions	0	0	1,310	0
Net interest expense	8,074	7,027	24,360	20,687
Income before income taxes	29,187	28,414	50,263	64,433
Provision for income taxes	7,611	9,663	(2,350)	21,601
Net income	$ 21,576	$ 18,751	$ 52,613	$ 42,832
Basic income per share (usd per share)	$ 0.58	$ 0.44	$ 1.38	$ 0.97
Diluted income per share (usd per share)	0.58	0.44	1.36	0.96
Cash dividends declared per common share (usd per share)	$ 0.16	$ 0.14	$ 0.48	$ 0.42