Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Nov. 30, 2015	Nov. 30, 2014
Cash flows from operating activities:
Net income	$ 12,458	$ 10,085
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	10,999	11,660
Stock-based compensation expense	956	952
Other	(722)	58
(Increase) decrease in operating assets:
Restricted cash	5,355	5,407
Accounts receivable and other assets	(105)	4,470
Increase (decrease) in operating liabilities:
Accounts payable	6,282	(179)
Accrued and other liabilities	(11,962)	(4,517)
Income taxes	2,507	5,763
Total adjustments	13,310	23,614
Net cash provided by operating activities	25,768	33,699
Cash flows from investing activities:
Purchases of property and equipment	(8,458)	(10,830)
Proceeds from sale of assets	1,615	605
Other	1,238	7,130
Net cash used in investing activities	(5,605)	(3,095)
Cash flows from financing activities:
Payments on debt	(32,948)	(2,447)
Proceeds from borrowings	78,000
Purchases of treasury stock	(49,572)	(20,425)
Proceeds from exercise of stock options	597	7,679
Payment of dividends	(5,448)	(4,795)
Other	(1,162)	(1,089)
Net cash used in financing activities	(10,533)	(21,077)
Net decrease in cash and cash equivalents	9,630	9,527
Cash and cash equivalents at beginning of period	27,191	35,694
Cash and cash equivalents at end of period	36,821	45,221
Non-cash investing and financing activities:
Change in obligation to acquire treasury stock	(2,457)	(233)
Change in obligation for purchase of property and equipment	$ 745	$ (1,625)