Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	May 31, 2016	May 31, 2015
Cash flows from operating activities:
Net income	$ 38,630	$ 38,189
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	33,461	34,634
Stock-based compensation expense	2,688	2,572
Loss from early extinguishment of debt	(8,750)
Provision for deferred income taxes	964	10,088
Other	(6,908)	(3,644)
(Increase) decrease in operating assets:
Restricted cash	2,351	3,312
Accounts receivable and other assets	(4,545)	(931)
Increase (decrease) in operating liabilities:
Accounts payable	4,632	2,105
Accrued and other liabilities	(3,261)	8,098
Income taxes	1,470	6,079
Total adjustments	39,602	62,313
Net cash provided by operating activities	78,232	100,502
Cash flows from investing activities:
Purchases of property and equipment	(26,467)	(30,867)
Proceeds from sale of assets	12,701	4,089
Other	(1,678)	4,148
Net cash used in investing activities	(15,444)	(22,630)
Cash flows from financing activities:
Payments on debt	(421,020)	(63,842)
Proceeds from borrowings	563,000	67,500
Restricted cash for securitization obligations	6,393	21
Purchases of treasury stock	(111,406)	(95,597)
Proceeds from exercise of stock options	5,878	15,763
Payment of dividends	(16,154)	(14,153)
Debt issuance and extinguishment costs	(18,339)	(12)
Other	1,031	(324)
Net cash provided by (used in) financing activities	9,383	(90,644)
Net increase (decrease) in cash and cash equivalents	72,171	(12,772)
Cash and cash equivalents at beginning of period	27,191	35,694
Cash and cash equivalents at end of period	99,362	22,922
Cash paid during the period for:
Income taxes (net of refunds)	18,258	2,927
Non-cash investing and financing activities:
Change in obligation to acquire treasury stock	$ (578)	$ (259)