Summary of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2020

Accounting Policies [Abstract]

Schedule of goodwill and intangible assets

The table below provides detail regarding the Company's intangible assets.

	Goodwill		Core Deposit and Other Intangibles		Total
	(In thousands)
Balance at September 30, 2018	$	301,368	$	9,918	$	311,286
Additions	—		—		—
Amortization	—		(2,039)		(2,039)
Balance at September 30, 2019	301,368		7,879		309,247
Additions	1,339		1,471		2,810
Amortization	—		(2,151)		(2,151)
Balance at September 30, 2020	$	302,707	$	7,199	$	309,906

Schedule of future amortization expense

The table below presents the estimated future amortization expense of core deposit and other intangibles for the next five years.

Fiscal Year	Expense
	(In thousands)
2021	$	1,369
2022	949
2023	893
2024	859
2025	810