LOANS AND LEASES, NET - Nonaccrual (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020
Financing Receivable, Nonaccrual [Line Items]
Loans and leases	$ 3,609,563	$ 3,322,765
Consumer finance
Financing Receivable, Nonaccrual [Line Items]
Loans and leases	252,900	224,200
Tax Services
Financing Receivable, Nonaccrual [Line Items]
Loans and leases	10,400	$ 3,100
Nonaccrual Loans
Financing Receivable, Nonaccrual [Line Items]
2021	131
2020	4,084
2019	12,543
2018	16,061
2017	158
Prior	0
Revolving Loans and Leases	1,268
Loans and leases	34,245
Nonaccrual With No ACL	13,912
Nonaccrual Loans \| National Lending \| Term lending
Financing Receivable, Nonaccrual [Line Items]
2021	131
2020	3,812
2019	10,072
2018	756
2017	133
Prior	0
Revolving Loans and Leases	0
Loans and leases	14,904
Nonaccrual With No ACL	12,103
Nonaccrual Loans \| National Lending \| Factoring
Financing Receivable, Nonaccrual [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	0
Revolving Loans and Leases	1,268
Loans and leases	1,268
Nonaccrual With No ACL	1,268
Nonaccrual Loans \| National Lending \| Lease financing
Financing Receivable, Nonaccrual [Line Items]
2021
2020	30
2019	2,471
2018	632
2017	25
Prior	0
Revolving Loans and Leases	0
Loans and leases	3,158
Nonaccrual With No ACL	541
Nonaccrual Loans \| National Lending \| Commercial finance
Financing Receivable, Nonaccrual [Line Items]
2021	131
2020	3,842
2019	12,543
2018	1,388
2017	158
Prior	0
Revolving Loans and Leases	1,268
Loans and leases	19,330
Nonaccrual With No ACL	13,912
Nonaccrual Loans \| Community Banking
Financing Receivable, Nonaccrual [Line Items]
2021	0
2020	242
2019	0
2018	14,673
2017	0
Prior	0
Revolving Loans and Leases	0
Loans and leases	14,915
Nonaccrual With No ACL	0
90 or More Days Delinquent and Accruing
Financing Receivable, Nonaccrual [Line Items]
2021	11,611
2020	8,753
2019	460
2018	102
2017	31
Prior	729
Revolving Loans and Leases	0
Loans and leases	21,686
90 or More Days Delinquent and Accruing \| National Lending \| Term lending
Financing Receivable, Nonaccrual [Line Items]
2021	2,546
2020	0
2019	12
2018	0
2017	0
Prior	0
Revolving Loans and Leases	0
Loans and leases	2,558
90 or More Days Delinquent and Accruing \| National Lending \| Lease financing
Financing Receivable, Nonaccrual [Line Items]
2021	429
2020	7,558
2019	224
2018	99
2017	31
Prior	4
Revolving Loans and Leases	0
Loans and leases	8,345
90 or More Days Delinquent and Accruing \| National Lending \| Insurance premium finance
Financing Receivable, Nonaccrual [Line Items]
2021	468
2020	131
2019	0
2018	0
2017	0
Prior	0
Revolving Loans and Leases	0
Loans and leases	599
90 or More Days Delinquent and Accruing \| National Lending \| SBA/USDA
Financing Receivable, Nonaccrual [Line Items]
2021	0
2020	987
2019	0
2018	0
2017	0
Prior	0
Revolving Loans and Leases	0
Loans and leases	987
90 or More Days Delinquent and Accruing \| National Lending \| Commercial finance
Financing Receivable, Nonaccrual [Line Items]
2021	3,443
2020	8,676
2019	236
2018	99
2017	31
Prior	4
Revolving Loans and Leases	0
Loans and leases	12,489
90 or More Days Delinquent and Accruing \| National Lending \| Consumer credit products
Financing Receivable, Nonaccrual [Line Items]
2021	206
2020	77
2019	224
2018	3
2017	0
Prior	0
Revolving Loans and Leases	0
Loans and leases	510
90 or More Days Delinquent and Accruing \| National Lending \| Other consumer finance
Financing Receivable, Nonaccrual [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	725
Revolving Loans and Leases	0
Loans and leases	725
90 or More Days Delinquent and Accruing \| National Lending \| Consumer finance
Financing Receivable, Nonaccrual [Line Items]
2021	206
2020	77
2019	224
2018	3
2017	0
Prior	725
Revolving Loans and Leases	0
Loans and leases	1,235
90 or More Days Delinquent and Accruing \| National Lending \| Tax Services
Financing Receivable, Nonaccrual [Line Items]
2021	7,962
2020	0
2019	0
2018	0
2017	0
Prior	0
Revolving Loans and Leases	0
Loans and leases	$ 7,962

Amount excluding accrued interest, before allowance for credit loss, of financing receivable.

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