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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 6 Months Ended
Feb. 29, 2020
Feb. 28, 2019
Operating activities:    
Net income $ 26,521 $ 29,185
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 4,024 3,825
Net gains on sales and disposals of property and equipment (66) (15)
Deferred income taxes (79) 411
Stock-based compensation 3,889 3,358
Unrealized foreign currency exchange (gains) losses (249) 460
Provision for bad debts 61 35
Changes in assets and liabilities:    
Trade accounts receivable (1,313) (6,378)
Inventories (1,648) (7,189)
Other assets (1,781) 5,318
Operating lease assets and liabilities, net 211  
Accounts payable and accrued liabilities 1,969 (5,239)
Accrued payroll and related expenses (7,345) (5,251)
Other long-term liabilities and income taxes payable (812) (1,294)
Net cash provided by operating activities 23,382 17,226
Investing activities:    
Purchases of property and equipment (10,695) (5,006)
Proceeds from sales of property and equipment 212 124
Net cash used in investing activities (10,483) (4,882)
Financing activities:    
Treasury stock purchases (9,658) (12,061)
Dividends paid (17,642) (16,011)
Repayments of long-term senior notes (400) (400)
Net proceeds of revolving credit facility 20,524 2,407
Shares withheld to cover taxes upon conversions of equity awards (2,640) (2,433)
Net cash used in financing activities (9,816) (28,498)
Effect of exchange rate changes on cash and cash equivalents 187 (1,116)
Net increase (decrease) in cash and cash equivalents 3,270 (17,270)
Cash and cash equivalents at beginning of period 27,233 48,866
Cash and cash equivalents at end of period 30,503 31,596
Supplemental disclosure of noncash investing activities:    
Accrued capital expenditures $ 5,724 $ 334