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Condensed Consolidated Statements Of Changes In Shareholders' Equity - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-In Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Treasury Stock [Member]
Total
Beginning balance, shares at Aug. 31, 2021 27,056,000          
Beginning balance at Aug. 31, 2021 $ 1,353 $ 214,888 $ 63,591 $ 709    
Beginning balance, shares, Treasury at Aug. 31, 2021         (12,889,000)  
Beginning balance, Treasury at Aug. 31, 2021         $ (200,678)  
Issuance of common stock from treasury, shares         217,000  
Issuance of common stock from treasury   (3,033)     $ 3,378  
Purchase of common shares for treasury, shares         (85,000)  
Purchase of common shares for treasury         $ (3,488)  
Stock-based compensation   1,649        
Cumulative translation adjustments       (144)    
Net income     3,812      
Ending balance, shares at Nov. 30, 2021 27,056,000          
Ending balance at Nov. 30, 2021 $ 1,353 213,504 67,403 565    
Ending balance, shares, Treasury at Nov. 30, 2021         (12,757,000)  
Ending balance, Treasury at Nov. 30, 2021         $ (200,788)  
Beginning balance, shares at Aug. 31, 2021 27,056,000          
Beginning balance at Aug. 31, 2021 $ 1,353 214,888 63,591 709    
Beginning balance, shares, Treasury at Aug. 31, 2021         (12,889,000)  
Beginning balance, Treasury at Aug. 31, 2021         $ (200,678)  
Cumulative translation adjustments           $ (912)
Net income           12,852
Ending balance, shares at May. 31, 2022 27,056,000          
Ending balance at May. 31, 2022 $ 1,353 217,862 76,443 (203)    
Ending balance, shares, Treasury at May. 31, 2022         (13,218,000)  
Ending balance, Treasury at May. 31, 2022         $ (220,509)  
Beginning balance, shares at Nov. 30, 2021 27,056,000          
Beginning balance at Nov. 30, 2021 $ 1,353 213,504 67,403 565    
Beginning balance, shares, Treasury at Nov. 30, 2021         (12,757,000)  
Beginning balance, Treasury at Nov. 30, 2021         $ (200,788)  
Issuance of common stock from treasury, shares         15,000  
Issuance of common stock from treasury   84     $ 239  
Purchase of common shares for treasury, shares         (1,000)  
Purchase of common shares for treasury         $ (47)  
Stock-based compensation   1,969        
Unvested share award, shares         13,000  
Unvested share award   (209)     $ 209  
Cumulative translation adjustments       (32)    
Net income     1,878      
Ending balance, shares at Feb. 28, 2022 27,056,000          
Ending balance at Feb. 28, 2022 $ 1,353 215,348 69,281 533    
Ending balance, shares, Treasury at Feb. 28, 2022         (12,730,000)  
Ending balance, Treasury at Feb. 28, 2022         $ (200,387)  
Issuance of common stock from treasury, shares         11,000  
Issuance of common stock from treasury   145     $ 193  
Purchase of common shares for treasury, shares         (499,000)  
Purchase of common shares for treasury         $ (20,315)  
Stock-based compensation   2,369        
Cumulative translation adjustments       (736)   (736)
Net income     7,162     7,162
Ending balance, shares at May. 31, 2022 27,056,000          
Ending balance at May. 31, 2022 $ 1,353 217,862 76,443 (203)    
Ending balance, shares, Treasury at May. 31, 2022         (13,218,000)  
Ending balance, Treasury at May. 31, 2022         $ (220,509)  
Beginning balance, shares at Aug. 31, 2022 27,056,000          
Beginning balance at Aug. 31, 2022 $ 1,353 220,246 82,021 (542)   $ 82,814
Beginning balance, shares, Treasury at Aug. 31, 2022         (13,203,000) (13,203,000)
Beginning balance, Treasury at Aug. 31, 2022         $ (220,264)  
Issuance of common stock from treasury, shares         56,000  
Issuance of common stock from treasury   (568)     $ 935  
Purchase of common shares for treasury, shares         (18,000)  
Purchase of common shares for treasury         $ (835)  
Stock-based compensation   2,735        
Cumulative translation adjustments       (130)    
Net income     4,667      
Ending balance, shares at Nov. 30, 2022 27,056,000          
Ending balance at Nov. 30, 2022 $ 1,353 222,413 86,688 (672)    
Ending balance, shares, Treasury at Nov. 30, 2022         (13,165,000)  
Ending balance, Treasury at Nov. 30, 2022         $ (220,164)  
Beginning balance, shares at Aug. 31, 2022 27,056,000          
Beginning balance at Aug. 31, 2022 $ 1,353 220,246 82,021 (542)   $ 82,814
Beginning balance, shares, Treasury at Aug. 31, 2022         (13,203,000) (13,203,000)
Beginning balance, Treasury at Aug. 31, 2022         $ (220,264)  
Issuance of common stock from treasury, shares           97,468
Purchase of common shares for treasury, shares           (761,000)
Purchase of common shares for treasury           $ (29,672)
Cumulative translation adjustments           (123)
Net income           10,969
Ending balance, shares at May. 31, 2023 27,056,000          
Ending balance at May. 31, 2023 $ 1,353 229,134 92,990 (665)   $ 74,507
Ending balance, shares, Treasury at May. 31, 2023         (13,866,000) (13,866,000)
Ending balance, Treasury at May. 31, 2023         $ (248,305)  
Beginning balance, shares at Nov. 30, 2022 27,056,000          
Beginning balance at Nov. 30, 2022 $ 1,353 222,413 86,688 (672)    
Beginning balance, shares, Treasury at Nov. 30, 2022         (13,165,000)  
Beginning balance, Treasury at Nov. 30, 2022         $ (220,164)  
Issuance of common stock from treasury, shares         12,000  
Issuance of common stock from treasury   181     $ 192  
Purchase of common shares for treasury, shares         (79,000)  
Purchase of common shares for treasury         $ (3,830)  
Stock-based compensation   3,315        
Unvested share award, shares         16,000  
Unvested share award   (266)     $ 266  
Cumulative translation adjustments       146    
Net income     1,739      
Ending balance, shares at Feb. 28, 2023 27,056,000          
Ending balance at Feb. 28, 2023 $ 1,353 225,643 88,427 (526)    
Ending balance, shares, Treasury at Feb. 28, 2023         (13,216,000)  
Ending balance, Treasury at Feb. 28, 2023         $ (223,536)  
Issuance of common stock from treasury, shares         14,000  
Issuance of common stock from treasury   184     $ 238  
Purchase of common shares for treasury, shares         (664,000)  
Purchase of common shares for treasury         $ (25,007)  
Stock-based compensation   3,307        
Cumulative translation adjustments       (139)   $ (139)
Net income     4,563     4,563
Ending balance, shares at May. 31, 2023 27,056,000          
Ending balance at May. 31, 2023 $ 1,353 $ 229,134 $ 92,990 $ (665)   $ 74,507
Ending balance, shares, Treasury at May. 31, 2023         (13,866,000) (13,866,000)
Ending balance, Treasury at May. 31, 2023         $ (248,305)