Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	May 31, 2017	May 31, 2016
Cash flows from operating activities:
Net income	$ 42,832	$ 38,630
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	29,531	33,461
Stock-based compensation expense	2,906	2,688
Loss from early extinguishment of debt	0	8,750
Provision for deferred income taxes	(1,354)	964
(Gain) loss on disposition of assets, net	(12,097)	(3,149)
Other	1,388	(3,759)
(Increase) decrease in operating assets:
Restricted cash	4,549	2,351
Accounts receivable and other assets	(2,124)	(4,545)
Increase (decrease) in operating liabilities:
Accounts payable	(2,894)	4,632
Accrued and other liabilities	(12,701)	(3,261)
Income taxes	44	1,470
Total adjustments	7,248	39,602
Net cash provided by operating activities	50,080	78,232
Cash flows from investing activities:
Purchases of property and equipment	(37,146)	(26,467)
Proceeds from sale of assets	62,393	12,701
Proceeds from sale of investment in refranchised drive-in operations	8,354	0
Other	10,574	(1,678)
Net cash provided by (used in) investing activities	44,175	(15,444)
Cash flows from financing activities:
Payments on debt	(10,417)	(421,020)
Proceeds from borrowings	43,000	563,000
Restricted cash for securitization obligations	203	6,393
Purchases of treasury stock	(128,180)	(111,406)
Proceeds from exercise of stock options	2,528	5,878
Payment of dividends	(18,485)	(16,154)
Debt issuance and extinguishment costs	(10)	(18,339)
Other	(2,936)	1,031
Net cash provided by (used in) financing activities	(114,297)	9,383
Net increase (decrease) in cash and cash equivalents	(20,042)	72,171
Cash and cash equivalents at beginning of period	72,092	27,191
Cash and cash equivalents at end of period	52,050	99,362
Cash paid during the period for:
Interest	20,210	17,983
Income taxes (net of refunds)	22,985	18,258
Non-cash investing and financing activities:
Net additions to capital lease obligations	1,433	645
Change in obligation to acquire treasury stock	$ (516)	$ (578)