XML 89 R72.htm IDEA: XBRL DOCUMENT v3.10.0.1
EMPLOYEE STOCK OWNERSHIP AND PROFIT SHARING PLANS (Details)
 12 Months Ended
Sep. 30, 2018
USD ($)
hours
$ / shares
shares
Sep. 30, 2017
USD ($)
$ / shares
shares
Sep. 30, 2016
USD ($)
$ / shares
shares
EMPLOYEE STOCK OWNERSHIP AND PROFIT SHARING PLANS [Abstract]      
Number of hours of employment required for ESOP | hours 1,000    
Years of employment to be eligible for ESOP 1 year    
Eligible age for ESOP 21 years    
Employee Stock Ownership Plan (ESOP), Expense | $ $ 2,073,000 $ 1,668,000 $ 1,150,000
Contribution to ESOP | $ $ 2,011,040 $ 1,606,102 $ 1,174,682
Percentage of benefits vested after credited service 100.00%    
ESOP award vesting period 7 years    
Years of credited service 7 years    
Number of shares (ESOP) released (in shares) 72,996 61,458 58,143
Fair value of shares (ESOP) released (in dollars per share) | $ / shares $ 27.55 $ 26.13 $ 20.20
Allocated and total ESOP shares withdrawn from ESOP by participant no longer with the company (in shares) 6,687 42,378 46,506
Shares purchased for dividend reinvestment (in shares) 3,987 4,437 8,130
Year-end ESOP shares [Abstract]      
Allocated shares (in shares) 812,346 768,657 788,616
Unearned shares (in shares) 0 0
Total ESOP shares (in shares) 812,346 768,657 788,616
Fair value of unearned shares | $ $ 0 $ 0 $ 0
Contribution expense to profit sharing plan included in compensation and benefits | $ $ 2,200,000 $ 1,600,000 $ 1,300,000