XML 69 R57.htm IDEA: XBRL DOCUMENT v3.21.2
The Incentive Stock Plans - Summary of Option Activity (Detail) - Stock Options [Member]
$ / shares in Units, $ in Thousands
 9 Months Ended 12 Months Ended
Jun. 30, 2021
USD ($)
$ / shares
shares
Sep. 30, 2020
USD ($)
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Shares Available for Grant, Beginning Balance 1,275,415  
Options cancelled/forfeited/expired, Shares Available for Grant 10,000  
Restricted stock awards issued, Shares Available for Grant (337,616)  
Restricted stock awards forfeited, Shares Available for Grant 6,175  
Additional shares of stock issued, Shares Available for Grant (4,287)  
Shares Available for Grant, Ending Balance 949,687 1,275,415
Options Outstanding, Beginning Balance 196,329  
Options cancelled/forfeited/expired, Options Outstanding (10,000)  
Options exercised, Options Outstanding (75,579)  
Options Outstanding, Ending Balance 110,750 196,329
Exercisable as of June 30, 2021, Options Outstanding 110,750  
Aggregate Intrinsic Value | $ $ 4,085 $ 2,636
Exercisable as of June 30 2021, Aggregate Intrinsic Value | $ $ 4,085  
Weighted Average Exercise Price, Beginning Balance | $ / shares $ 12.12  
Weighted Average Exercise Price, Ending Balance | $ / shares 11.49 $ 12.12
Exercisable as of June 30 2021, Weighted Average Exercise Price | $ / shares $ 11.49  
Weighted Average Remaining Contractual Life 1 year 10 months 24 days 2 years 6 months
Exercisable as of June 30, 2021, Weighted Average Remaining Contractual Life 1 year 10 months 24 days