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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended 16 Months Ended
Feb. 28, 2023
Nov. 30, 2022
Feb. 28, 2022
Nov. 30, 2021
Feb. 28, 2023
Feb. 28, 2022
Aug. 31, 2022
Feb. 28, 2023
Operating activities:                
Net income $ 16,526 $ 13,997 $ 19,508 $ 18,555 $ 30,523 $ 38,063    
Adjustments to reconcile net income to net cash provided by operating activities:                
Depreciation and amortization 1,968   2,095   3,864 4,082    
Net losses (gains) on sales and disposals of property and equipment         83 (123)    
Deferred income taxes         (224) 367    
Stock-based compensation         4,980 4,776    
Unrealized foreign currency exchange gains         (1,820) (110)    
Provision for credit losses         53 (55)    
Impairment of inventories         568 113    
Changes in assets and liabilities:                
Trade and other accounts receivable         (9,689) (15,178)    
Inventories         (4,159) (20,482)    
Other assets         (780) (4,328)    
Operating lease assets and liabilities, net         60 1    
Accounts payable and accrued liabilities         (3,059) 9,624    
Accrued payroll and related expenses         260 (12,356)    
Other long-term liabilities and income taxes payable         287 (311)    
Net cash provided by operating activities         20,947 4,083    
Investing activities:                
Purchases of property and equipment         (3,571) (3,860)    
Proceeds from sales of property and equipment         290 289    
Net cash used in investing activities         (3,281) (3,571)    
Financing activities:                
Treasury stock purchases         (5,641) (18,165)   $ (34,800)
Dividends paid         (21,958) (20,619)    
Repayments of long-term senior notes         (400) (400)    
Net proceeds (repayments) from revolving credit facility         8,305 1,238    
Shares withheld to cover taxes upon conversions of equity awards         (600) (4,321)    
Net cash used in financing activities         (20,294) (42,267)    
Effect of exchange rate changes on cash and cash equivalents         2,777 (884)    
Net increase (decrease) in cash and cash equivalents         149 (42,639)    
Cash and cash equivalents at beginning of period   $ 37,843   $ 85,961 37,843 85,961 $ 85,961  
Cash and cash equivalents at end of period $ 37,992   $ 43,322   37,992 43,322 $ 37,843 $ 37,992
Supplemental disclosure of noncash investing activities:                
Accrued capital expenditures         $ 137 $ 798