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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended 4 Months Ended 6 Months Ended 12 Months Ended
Feb. 28, 2022
Nov. 30, 2021
Feb. 28, 2021
Nov. 30, 2020
Feb. 28, 2022
Feb. 28, 2022
Feb. 28, 2021
Aug. 31, 2021
Operating activities:                
Net income $ 19,508 $ 18,555 $ 17,191 $ 23,623   $ 38,063 $ 40,814  
Adjustments to reconcile net income to net cash provided by operating activities:                
Depreciation and amortization 2,095   1,757     4,082 3,458  
Net gains on sales and disposals of property and equipment           (123) (104)  
Deferred income taxes           367 152  
Stock-based compensation           4,776 4,542  
Unrealized foreign currency exchange (gains) losses           (110) 139  
Provision for bad debts           (55) 175  
Changes in assets and liabilities:                
Trade and other accounts receivable           (15,178) (10,111)  
Inventories           (20,369) (2,104)  
Other assets           (4,328) (4,386)  
Operating lease assets and liabilities, net           1 9  
Accounts payable and accrued liabilities           9,624 7,398  
Accrued payroll and related expenses           (12,356) 1,584  
Other long-term liabilities and income taxes payable           (311) 944  
Net cash provided by operating activities           4,083 42,510  
Investing activities:                
Purchases of property and equipment           (3,860) (7,605)  
Proceeds from sales of property and equipment           289 239  
Net cash used in investing activities           (3,571) (7,366)  
Financing activities:                
Treasury stock purchases         $ (18,200) (18,165)    
Dividends paid           (20,619) (18,416)  
Proceeds from issuance of long-term senior notes             52,000  
Repayments of long-term senior notes           (400) (400)  
Net proceeds (repayments) of revolving credit facility           1,238 (50,000)  
Shares withheld to cover taxes upon conversions of equity awards           (4,321) (3,495)  
Net cash used in financing activities           (42,267) (20,311)  
Effect of exchange rate changes on cash and cash equivalents           (884) 1,086  
Net (decrease) increase in cash and cash equivalents           (42,639) 15,919  
Cash and cash equivalents at beginning of period   $ 85,961   $ 56,462   85,961 56,462 $ 56,462
Cash and cash equivalents at end of period $ 43,322   $ 72,381   $ 43,322 43,322 72,381 $ 85,961
Supplemental disclosure of noncash investing activities:                
Accrued capital expenditures           $ 798 $ 1,638