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INCOME TAXES (Tables)
9 Months Ended
Jun. 30, 2021
Income Tax Disclosure [Abstract]  
Schedule of Effective Income Tax Rate Reconciliation
The table below compares the income tax expense components for the periods presented.
Nine Months Ended June 30,
(Dollars in Thousands)20212020
Provision at statutory rate$28,435 $20,041 
Tax-exempt income(674)(936)
State income taxes6,120 4,475 
Interim period effective rate adjustment(5,181)(8,850)
Tax credit investments, net - federal(18,854)(9,863)
Research tax credit(323)(1,709)
IRC 162(m) nondeductible compensation677 1,250 
Other, net(600)(538)
Income tax expense$9,600 $3,870 
Effective tax rate6.92 %3.91 %