XML 130 R97.htm IDEA: XBRL DOCUMENT v3.20.2
STOCK COMPENSATION - Additional Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2018
Effect to income of share-based compensation expense, net of tax benefits [Abstract]      
Total employee stock-based compensation expense recognized in income, net of tax effects of $2,567, $3,230, and $3,139, respectively $ 7,656 $ 9,716 $ 7,878
Tax effects of employee's stock-based compensation expense recognized income 2,567 $ 3,230 $ 3,139
Stock based compensation expense not yet recognized in income $ 7,500    
Weighted average remaining period for unrecognized stock based compensation 2 years 6 months 7 days    
Period that options are issued 10 years    
Percentage of options vesting at either grant date or over four year period 100.00%    
Period that options vest 4 years    
Granted (in shares) 0 0 0
Exercised $ 1,011 $ 1,842 $ 1,900
Fair value of share granted (in shares) 191,372 315,802  
Award vesting period eight years    
Director      
Effect to income of share-based compensation expense, net of tax benefits [Abstract]      
Fair value of share granted (in shares) 800,000 1,000,000.0 1,100,000