CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Nov. 30, 2014	Nov. 30, 2013
Operating activities:
Net income	$ 10,786	$ 11,482
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,633	1,378
Net gains on sales and disposals of property and equipment	(24)	(17)
Deferred income taxes	(615)	(154)
Excess tax benefits from settlements of stock-based equity awards	(494)	(777)
Stock-based compensation	498	517
Unrealized foreign currency exchange losses (gains), net	461	(1,053)
Provision for bad debts	164	215
Changes in assets and liabilities:
Trade and other accounts receivable	(720)	2,302
Inventories	624	(1,088)
Other assets	2,841	117
Accounts payable and accrued liabilities	(3,563)	(2,580)
Accrued payroll and related expenses	(4,931)	(6,720)
Income taxes payable	2,698	3,052
Other long-term liabilities	40	35
Net cash provided by operating activities	9,398	6,709
Investing activities:
Purchases of property and equipment	(1,582)	(1,186)
Proceeds from sales of property and equipment	79	95
Acquisition of business	(3,705)
Purchases of short-term investments	(82)	(1,282)
Net cash used in investing activities	(5,290)	(2,373)
Financing activities:
Treasury stock purchases	(9,863)	(5,264)
Dividends paid	(5,003)	(4,758)
Proceeds from issuance of common stock	685	1,149
Excess tax benefits from settlements of stock-based equity awards	494	777
Net cash used in financing activities	(13,687)	(8,096)
Effect of exchange rate changes on cash and cash equivalents	(1,782)	1,745
Net decrease in cash and cash equivalents	(11,361)	(2,015)
Cash and cash equivalents at beginning of period	57,803	53,434
Cash and cash equivalents at end of period	$ 46,442	$ 51,419