ESSA Bancorp (ESSA) 10-Q 14 Feb 22 2022 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Dec. 31, 2021	Feb. 11, 2022
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Dec. 31, 2021
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Trading Symbol	ESSA
Entity Registrant Name	ESSA Bancorp, Inc.
Entity Central Index Key	0001382230
Current Fiscal Year End Date	--09-30
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		10,489,391
Entity File Number	001-33384
Entity Tax Identification Number	20-8023072
Entity Address, Address Line One	200 Palmer Street
Entity Address, City or Town	Stroudsburg
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	18360
City Area Code	570
Local Phone Number	421-0531
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common
Security Exchange Name	NASDAQ
Entity Incorporation, State or Country Code	PA
Document Quarterly Report	true
Document Transition Report	false

Consolidated Balance Sheet (Una

Consolidated Balance Sheet (Unaudited) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
ASSETS
Cash and due from banks	$ 187,601	$ 146,841
Interest-bearing deposits with other institutions	10,820	12,105
Total cash and cash equivalents	198,421	158,946
Investment securities available for sale, at fair value	172,154	240,581
Investment securities held to maturity, at amortized cost	55,747	21,483
Loans held for sale	388	381
Loans receivable (net of allowance for loan losses of $18,210 and $18,113)	1,339,301	1,340,853
Regulatory stock, at cost	5,059	4,651
Premises and equipment, net	13,543	13,605
Bank-owned life insurance	37,674	37,481
Foreclosed real estate	193	461
Intangible assets, net	454	520
Goodwill	13,801	13,801
Deferred income taxes	4,066	4,613
Other assets	27,545	24,060
TOTAL ASSETS	1,868,346	1,861,436
LIABILITIES
Deposits	1,634,734	1,636,115
Advances by borrowers for taxes and insurance	8,781	4,949
Other liabilities	17,212	18,550
TOTAL LIABILITIES	1,660,727	1,659,614
STOCKHOLDERS’ EQUITY
Preferred stock ($0.01 par value; 10,000,000 shares authorized, none issued)
Common stock ($0.01 par value; 40,000,000 shares authorized, 18,133,095 issued; 10,489,391 and 10,461,443 outstanding at December 31, 2021 and September 30, 2021, respectively)	181	181
Additional paid in capital	181,634	181,659
Unallocated common stock held by the Employee Stock Ownership Plan (ESOP)	(6,802)	(6,915)
Retained earnings	127,784	124,342
Treasury stock, at cost; 7,643,704 and 7,671,652 shares outstanding at December 31, 2021 and September 30, 2021, respectively	(97,767)	(98,127)
Accumulated other comprehensive income (loss)	2,589	682
TOTAL STOCKHOLDERS’ EQUITY	207,619	201,822
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 1,868,346	$ 1,861,436

Consolidated Balance Sheet (U_2

Consolidated Balance Sheet (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Statement Of Financial Position [Abstract]
Allowance for loan losses	$ 18,210	$ 18,113
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	18,133,095	18,133,095
Common stock, shares outstanding	10,489,391	10,461,443
Treasury stock, shares outstanding	7,643,704	7,671,652

Consolidated Statement of Opera

Consolidated Statement of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
INTEREST INCOME
Loans receivable, including fees	$ 13,259	$ 13,760
Investment securities:
Taxable	1,011	997
Exempt from federal income tax	19	40
Other investment income	119	115
Total interest income	14,408	14,912
INTEREST EXPENSE
Deposits	846	1,772
Short-term borrowings		189
Other borrowings		39
Total interest expense	846	2,000
NET INTEREST INCOME	13,562	12,912
Provision for loan losses		900
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	13,562	12,012
NONINTEREST INCOME
Service fees on deposit accounts	783	789
Services charges and fees on loans	417	425
Loan swap fees	147	211
Unrealized gain on equity securities, net	1	7
Trust and investment fees	426	331
Gain on sale of loans, net	219	818
Earnings on bank-owned life insurance	193	343
Insurance commissions	147	168
Other	(5)	43
Total noninterest income	2,328	3,135
NONINTEREST EXPENSE
Compensation and employee benefits	6,334	6,396
Occupancy and equipment	1,094	1,067
Professional fees	695	533
Data processing	1,180	1,082
Advertising	93	101
Federal Deposit Insurance Corporation (FDIC) premiums	164	273
Gain on foreclosed real estate	(31)	(19)
Amortization of intangible assets	66	68
Other	709	677
Total noninterest expense	10,304	10,178
Income before income taxes	5,586	4,969
Income taxes	973	834
NET INCOME	$ 4,613	$ 4,135
Earnings per share
Basic	$ 0.47	$ 0.41
Diluted	0.47	0.41
Dividends per share	$ 0.12	$ 0.11

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 4,613	$ 4,135
Investment securities available for sale:
Unrealized holding losses	(1,066)	(225)
Tax effect	223	47
Net of tax amount	(843)	(178)
Pension plan:
Changes in unrealized holding gains	965
Tax effect	(202)
Reclassification of items recognized in net income	139
Tax effect	(29)
Net of tax amount	873
Derivative and hedging activities adjustments:
Changes in unrealized holding gains on derivatives included in net income	2,139	516
Tax effect	(449)	(106)
Reclassification adjustment for losses on derivatives included in net income	236	667
Tax effect	(49)	(140)
Net of tax amount	1,877	937
Total other comprehensive income	1,907	759
Comprehensive income	$ 6,520	$ 4,894

Consolidated Statement of Chang

Consolidated Statement of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Unallocated Common Stock Held by the ESOP [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Sep. 30, 2020	$ 191,397	$ 181	$ 181,487	$ (7,350)	$ 112,612	$ (91,477)	$ (4,056)
Beginning Balance, Shares at Sep. 30, 2020		10,876,869
Net income	4,135				4,135
Other comprehensive income (loss)	759						759
Cash dividends declared	(1,102)				(1,102)
Stock based compensation	232		232
Allocation of ESOP stock	143		30	113
Allocation of treasury shares to incentive plan			(550)			550
Allocation of treasury shares to incentive plan, Shares		43,647
Purchase of common stock	(1,411)					(1,411)
Purchase of common stock, Shares		(99,700)
Ending Balance at Dec. 31, 2020	194,153	$ 181	181,199	(7,237)	115,645	(92,338)	(3,297)
Ending Balance, Shares at Dec. 31, 2020		10,820,816
Beginning Balance at Sep. 30, 2021	$ 201,822	$ 181	181,659	(6,915)	124,342	(98,127)	682
Beginning Balance, Shares at Sep. 30, 2021	10,461,443	10,461,443
Net income	$ 4,613				4,613
Other comprehensive income (loss)	1,907						1,907
Cash dividends declared	(1,171)				(1,171)
Stock based compensation	262		262
Allocation of ESOP stock	189		76	113
Allocation of treasury shares to incentive plan	(3)		(363)			360
Allocation of treasury shares to incentive plan, Shares		27,948
Ending Balance at Dec. 31, 2021	$ 207,619	$ 181	$ 181,634	$ (6,802)	$ 127,784	$ (97,767)	$ 2,589
Ending Balance, Shares at Dec. 31, 2021	10,489,391	10,489,391

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash dividends declared, per share	$ 0.12	$ 0.11
Retained Earnings [Member]
Cash dividends declared, per share	$ 0.12	$ 0.11

Consolidated Statement of Cash

Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
OPERATING ACTIVITIES
Net income	$ 4,613	$ 4,135
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses		900
Provision for depreciation and amortization	264	265
Amortization and accretion of discounts and premiums, net	(293)	(99)
Realized and unrealized gain on equity securities	(1)	(7)
Gain on sale of loans, net	(219)	(818)
Origination of residential real estate loans for sale	(12,539)	(19,341)
Proceeds on sale of residential real estate loans	12,751	19,744
Compensation expense on ESOP	189	143
Amortization of right-of-use asset	209	220
Stock based compensation	262	232
Decrease in accrued interest receivable	284	719
Increase in accrued interest payable	42	37
Earnings on bank-owned life insurance	(193)	(223)
Deferred federal income taxes	41	106
Increase in accrued pension	(69)	(121)
Gain on foreclosed real estate, net	(31)	(19)
Amortization of intangible assets	66	68
Other, net	(1,742)	(2,013)
Net cash provided by operating activities	3,634	3,928
Investment securities available for sale:
Proceeds from principal repayments and maturities	108,028	48,319
Purchases	(40,853)	(10,476)
Investment securities held to maturity:
Proceeds from principal repayments and maturities	986
Purchases	(35,250)
Decrease in loans receivable, net	2,033	42,058
Redemption of regulatory stock	212	4,884
Purchase of regulatory stock	(620)	(1,181)
Proceeds from sale of foreclosed real estate	299	83
Purchase of premises, equipment and software	(274)	(190)
Net cash provided by investing activities	34,561	83,497
FINANCING ACTIVITIES
(Decrease) increase in deposits, net	(1,381)	86,638
Net decrease in short-term borrowings		(111,144)
Increase in advances by borrowers for taxes and insurance	3,832	891
Purchase of common stock		(1,411)
Dividends on common stock	(1,171)	(1,102)
Net cash provided by (used for) financing activities	1,280	(26,128)
Increase in cash and cash equivalents	39,475	61,297
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	158,946	155,917
CASH AND CASH EQUIVALENTS AT END OF YEAR	198,421	217,214
Cash Paid:
Interest	804	1,963
Noncash items:
Transfers from loans to foreclosed real estate		160
Initial recognition of Operating Right -of-Use Asset	520
Initial recognition of Operating Right -of-Use Liability	520
Death benefit receivable on BOLI		(3,865)
Unrealized holding losses	$ (1,066)	$ (225)

Nature of Operations and Basis

Nature of Operations and Basis of Presentation	3 Months Ended
	Dec. 31, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Nature of Operations and Basis of Presentation	1. Nature of Operations and Basis of Presentation The consolidated financial statements include the accounts of ESSA Bancorp, Inc. (the “Company”), its wholly owned subsidiary, ESSA Bank & Trust (the “Bank”), and the Bank’s wholly owned subsidiaries, ESSACOR Inc.; Pocono Investments Company; ESSA Advisory Services, LLC; Integrated Financial Corporation; and Integrated Abstract Incorporated, a wholly owned subsidiary of Integrated Financial Corporation. The primary purpose of the Company is to act as a holding company for the Bank. The Bank’s primary business consists of the taking of deposits and granting of loans to customers generally in Monroe, Northampton, Lehigh, Delaware, Chester, Montgomery, Lackawanna, and Luzerne Counties, Pennsylvania. The Bank is a Pennsylvania chartered savings bank and is subject to regulation and supervision by the Pennsylvania Department of Banking and Securities and the Federal Deposit Insurance Corporation (the “FDIC”). The investment in the Bank on the parent company’s financial statements is carried at the parent company’s equity in the underlying net assets. ESSACOR, Inc. is a Pennsylvania corporation that has been used to purchase properties at tax sales that represent collateral for delinquent loans of the Bank and is currently inactive. Pocono Investment Company is a Delaware corporation formed as an investment company subsidiary to hold and manage certain investments, including certain intellectual property. ESSA Advisory Services, LLC is a Pennsylvania limited liability company owned 100 percent by ESSA Bank & Trust. ESSA Advisory Services, LLC is a full-service insurance benefits consulting company offering group services such as health insurance, life insurance, short-term and long-term disability, dental, vision, and 401(k) retirement planning as well as individual health products. Integrated Financial Corporation is a Pennsylvania corporation that provided investment advisory services to the general public and is currently inactive. Integrated Abstract Incorporated is a Pennsylvania corporation that provided title insurance services and is currently inactive. All significant intercompany accounts and transactions have been eliminated in consolidation. The unaudited consolidated financial statements reflect all adjustments, which in the opinion of management, are necessary for a fair presentation of the results of the interim periods and are of a normal and recurring nature. Operating results for the three month periods ended December 31, 2021 and 2020 are not necessarily indicative of the results that may be expected for the year ending September 30, 2022.

Earnings per Share

Earnings per Share	3 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Earnings per Share	2. Earnings per Share The following table sets forth the composition of the weighted-average common shares (denominator) used in the basic and diluted earnings per share computation for the three month periods ended December 31, 2021 and 2020. Three Months Ended December 31, December 31, 2021 2020 Weighted-average common shares outstanding 18,133,095 18,133,095 Average treasury stock shares (7,643,827 ) (7,279,981 ) Average unearned ESOP shares (673,259 ) (718,523 ) Average unearned non-vested shares (56,760 ) (63,504 ) Weighted average common shares and common stock equivalents used to calculate basic earnings per share 9,759,249 10,071,087 Additional common stock equivalents (nonvested stock) used to calculate diluted earnings per share 12,297 2,820 Weighted average common shares and common stock equivalents used to calculate diluted earnings per share 9,771,546 10,073,907 At December 31, 2021 there were 13,883 shares of nonvested stock outstanding at an average weighted price of $16.17 per share that were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive. At December 31, 2020 there were 32,107 shares of nonvested stock outstanding at an average weighted price of $16.13 per share that were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive.

Use of Estimates in the Prepara

Use of Estimates in the Preparation of Financial Statements	3 Months Ended
	Dec. 31, 2021
Text Block [Abstract]
Use of Estimates in the Preparation of Financial Statements	3. Use of Estimates in the Preparation of Financial Statements The accounting principles followed by the Company and its subsidiaries and the methods of applying these principles conform to U.S. generally accepted accounting principles (“GAAP”) and to general practice within the banking industry. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the Consolidated Balance Sheet date and related revenues and expenses for the period. Actual results could differ from those estimates.

Accounting Pronouncements

Accounting Pronouncements	3 Months Ended
	Dec. 31, 2021
Accounting Changes And Error Corrections [Abstract]
Accounting Pronouncements	4. Accounting Pronouncements Adoption of New Standards In August 2018, the FASB issued ASU 2018-14, Compensation – Retirement Benefits (Topic 715-20) In January 2020, the FASB issued ASU 2020-4, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting In October 2020, the FASB issued ASU 2020-08, Codification Improvements to Subtopic 310-20, Receivables – Nonrefundable Fees and Other Costs, In January 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848) 2020 The adoption of ASU 2021-01 did not have a significant impact on the Company’s financial statements. Recent Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments allowance for credit losses should reflect management’s current estimate of credit losses that are expected to occur over the remaining life of a financial asset. The income statement will be effected for the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period. ASU 2016-13 is effective for annual and interim periods beginning after December 15, 2019, and early adoption is permitted for annual and interim periods beginning after December 15, 2018. With certain exceptions, transition to the new requirements will be through a cumulative effect adjustment to opening retained earnings as of the beginning of the first reporting period in which the guidance is adopted. In November 2019, the FASB issued ASU 2019-10, Financial Instruments ‒ Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842) . This Update defers the effective date of ASU 2016-13 for SEC filers that are eligible to be smaller reporting companies, non-SEC filers, and all other companies to fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. We expect to recognize a one-time cumulative effect adjustment to the allowance for loan losses as of the beginning of the first reporting period in which the new standard is effective, but cannot yet determine the magnitude of any such one-time adjustment or the overall impact of the new guidance on the consolidated financial statements. In May 2019, the FASB issued ASU 2019-05, Financial Instruments – Credit Losses, Topic 326 In November 2019, the FASB issued ASU 2019-11, Codification Improvements to Topic 326, Financial Instruments – Credit Losses In March 2020, the FASB issued ASU 2020-3 , Codification Improvements to Financial Instruments. Financial Instruments In August 2020, the FASB issued ASU 2020-06, Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40) assess the amount or timing of an entity’s future cash flows related to those instruments. The amendments in this ASU are effective for public business entities that are not smaller reporting companies, for fiscal years beginning after December 15, 2021, and interim periods within those fiscal years. For all other entities, this ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years. The guidance may be early adopted for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years. This Update is not expected to have a significant impact on the Company’s financial statements. In May 2021, the FASB issued ASU 2021-04, Earnings Per Share (Topic 260), Debt – Modifications and Extinguishments (Subtopic 470-50), Compensation – Stock Compensation (Topic 718), and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40), In July 2021, the FASB issued ASU 2021-05, Leases (Topic 842 In October 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers

Investment Securities

Investment Securities	3 Months Ended
	Dec. 31, 2021
Investments Debt And Equity Securities [Abstract]
Investment Securities	5. The amortized cost, gross unrealized gains and losses, and fair value of investment securities available for sale are summarized as follows (in thousands): December 31, 2021 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available for Sale Fannie Mae $ 23,492 $ 596 $ (54 ) $ 24,034 Freddie Mac 19,387 373 (33 ) 19,727 Governmental National Mortgage Association 5,442 72 (17 ) 5,497 Total mortgage-backed securities 48,321 1,041 (104 ) 49,258 Obligations of states and political subdivisions 12,821 376 — 13,197 U.S. government treasury securities 30,000 — — 30,000 Corporate obligations 68,959 948 (884 ) 69,023 Other debt securities 10,637 150 (111 ) 10,676 Total $ 170,738 $ 2,515 $ (1,099 ) $ 172,154 Held to Maturity Fannie Mae $ 31,364 $ 5 $ (241 ) $ 31,128 Freddie Mac 21,948 — (179 ) 21,769 Total mortgage-backed securities $ 53,312 $ 5 $ (420 ) $ 52,897 U.S. government agency securities 2,435 13 — 2,448 Total mortgage-backed securities $ 55,747 $ 18 $ (420 ) $ 55,345 September 30, 2021 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available for Sale Fannie Mae $ 25,614 $ 766 $ (30 ) $ 26,350 Freddie Mac 21,240 574 (42 ) 21,772 Governmental National Mortgage Association 6,801 159 (14 ) 6,946 Total mortgage-backed securities 53,655 1,499 (86 ) 55,068 Obligations of states and political subdivisions 12,826 420 — 13,246 U.S. government agency securities 99,997 — — 99,997 U.S. government treasury securities 1,998 4 — 2,002 Corporate obligations 58,130 940 (453 ) 58,617 Other debt securities 11,493 273 (115 ) 11,651 Total $ 238,099 $ 3,136 $ (654 ) $ 240,581 Held to Maturity Fannie Mae 11,738 — (111 ) 11,627 Freddie Mac 9,745 — (123 ) 9,622 Total debt securities $ 21,483 $ — $ (234 ) $ 21,249 The following is a summary of unrealized and realized gains and losses recognized in net income on equity securities during the three months ended December 31, 2021 and 2020. (in thousands) Three Months Ended December 31, 2021 Three Months Ended December 31, 2020 Net gains recognized during the period on equity securities $ 1 $ 7 Less: Net gains recognized during the period on equity securities sold during the period — — Unrealized gains recognized during the reporting period on equity securities still held at the reporting date $ 1 $ 7 The amortized cost and fair value of debt securities at December 31, 2021, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties (in thousands): Available For Sale Held to Maturity Amortized Cost Fair Value Amortized Cost Fair Value Due in one year or less $ 31,770 $ 31,772 $ — $ — Due after one year through five years 21,319 21,758 — — Due after five years through ten years 68,373 68,578 8,875 8,808 Due after ten years 49,276 50,046 46,872 46,537 Total $ 170,738 $ 172,154 $ 55,747 $ 55,345 For the three months ended December 31, 2021 and 2020, the Company realized no gross gains or gross losses on proceeds from the sale on investment securities. The following tables show the Company’s gross unrealized losses and fair value, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position (dollars in thousands): December 31, 2021 Number of Securities Less than Twelve Months Twelve Months or Greater Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fannie Mae 24 $ 30,474 $ (278 ) $ 3,705 $ (17 ) $ 34,179 $ (295 ) Freddie Mac 19 26,525 (212 ) — — 26,525 (212 ) Governmental National Mortgage Association 8 954 (4 ) 1,803 (13 ) 2,757 (17 ) Corporate obligations 38 31,331 (821 ) 1,931 (63 ) 33,262 (884 ) Other debt securities 9 1 — 2,259 (111 ) 2,260 (111 ) Total 98 $ 89,285 $ (1,315 ) $ 9,698 $ (204 ) $ 98,983 $ (1,519 ) September 30, 2021 Less than Twelve Months Twelve Months or Greater Total Number of Securities Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fannie Mae 17 $ 15,410 $ (127 ) $ 4,078 $ (14 ) $ 19,488 $ (141 ) Freddie Mac 12 14,466 (165 ) — — 14,466 (165 ) Governmental National Mortgage Association 4 — — 2,038 (14 ) 2,038 (14 ) Corporate obligations 28 22,799 (397 ) 1,937 (56 ) 24,736 (453 ) Other debt securities 8 — — 2,348 (115 ) 2,348 (115 ) Total 69 $ 52,675 $ (689 ) $ 10,401 $ (199 ) $ 63,076 $ (888 ) The Company’s investment securities portfolio contains unrealized losses on securities, including mortgage-related instruments issued or backed by the full faith and credit of the United States government, or generally viewed as having the implied guarantee of the U.S. government, other mortgage backed securities, debt obligations of a U.S. state or political subdivision, U.S. government agency securities, corporate obligations, other debt securities and equity securities. The Company reviews its position quarterly and has asserted that at December 31, 2021, the declines outlined in the above table represent temporary declines and the Company would not be required to sell the above securities before their anticipated recovery in market value. The Company has concluded that any impairment of its investment securities portfolio is not other than temporary but is the result of interest rate changes that are not expected to result in the non-collection of principal and interest during the period.

Loans Receivable, Net and Allow

Loans Receivable, Net and Allowance for Loan Losses	3 Months Ended
	Dec. 31, 2021
Receivables [Abstract]
Loans Receivable, Net and Allowance for Loan Losses	6. Loans Receivable, Net and Allowance for Loan Losses Loans receivable consist of the following (in thousands): December 31, 2021 September 30, 2021 Real estate loans: Residential $ 580,292 $ 580,313 Construction 18,003 14,013 Commercial 615,608 591,117 Commercial 56,548 63,500 Obligations of states and political subdivisions 37,804 56,164 Home equity loans and lines of credit 37,384 38,426 Auto loans 10,339 13,852 Other 1,533 1,581 1,357,511 1,358,966 Less allowance for loan losses 18,210 18,113 Net loans $ 1,339,301 $ 1,340,853 During 2020 and 2021 the Company participated in the Paycheck Protection Program (“PPP”), administered directly by the U.S. Small Business Administration (the “SBA”). The PPP provides loans to small businesses who were affected by economic conditions as a result of COVID-19 to provide cash-flow assistance to employers who maintain their payroll (including healthcare and certain related expenses), mortgage interest, rent, leases, utilities and interest on existing debt during the COVID-19 emergency. The PPP loans are fully guaranteed by the SBA and may be eligible for forgiveness by the SBA to the extent that the proceeds are used to cover eligible payroll costs, interest costs, rent, and utility costs over a period of up to 24 weeks after the loan is made as long as certain conditions are met regarding employee retention and compensation levels. PPP loans deemed eligible for forgiveness by the SBA will be repaid by the SBA to the Company. PPP loans are included in the Commercial loan category. In accordance with the SBA terms and conditions on these PPP loans, the Company received approximately $2.4 million in fees associated with the processing of these loans. Upon funding of the loan, these fees were deferred and will be amortized over the life of the loan as an adjustment to yield in accordance with FASB ASC 310-20-25-2. Included in commercial loans in the above table are 69 loans totaling $13.2 million originated by the Company under the Paycheck Protection Program through the quarter ended December 31, 2021 compared to 180 loans totaling $22.6 million at September 30, 2021. These loans mature in two or five years. Purchased loans acquired in a business combination are recorded at fair value on their purchase date without a carryover of the related allowance for loan losses. The following table presents additional information regarding loans acquired and accounted for in accordance with ASC 310-30 (in thousands): December 31, 2021 September 30, 2021 Acquired Loans with Specific Evidence or Deterioration in Credit Quality (ASC 310-30) Acquired Loans with Specific Evidence or Deterioration in Credit Quality (ASC 310-30) Outstanding balance $ 695 $ 939 Carrying amount $ 646 $ 877 The following tables show the amount of loans in each category that were individually and collectively evaluated for impairment at the dates indicated (in thousands): Total Loans Individually Evaluated for Impairment Loans Acquired with Deteriorated Credit Quality Collectively Evaluated for Impairment December 31, 2021 Real estate loans: Residential $ 580,292 $ 2,225 $ - $ 578,067 Construction 18,003 - - 18,003 Commercial 615,608 11,024 646 603,938 Commercial 56,548 1,247 - 55,301 Obligations of states and political subdivisions 37,804 - - 37,804 Home equity loans and lines of credit 37,384 297 - 37,087 Auto loans 10,339 44 - 10,295 Other 1,533 8 - 1,525 Total $ 1,357,511 $ 14,845 $ 646 $ 1,342,020 Total Loans Individually Evaluated for Impairment Loans Acquired with Deteriorated Credit Quality Collectively Evaluated for Impairment September 30, 2021 Real estate loans: Residential $ 580,313 $ 2,646 $ - $ 577,667 Construction 14,013 - - 14,013 Commercial 591,117 11,166 877 579,074 Commercial 63,500 1,355 - 62,145 Obligations of states and political sub divisions 56,164 - - 56,164 Home equity loans and lines of credit 38,426 336 - 38,090 Auto loans 13,852 39 - 13,813 Other 1,581 8 - 1,573 Total $ 1,358,966 $ 15,550 $ 877 $ 1,342,539 The Company maintains a loan review system that allows for a periodic review of our loan portfolio and the early identification of potential impaired loans. Such system takes into consideration, among other things, delinquency status, size of loans, type and market value of collateral and financial condition of the borrowers. Specific loan loss allowances are established for identified losses based on a review of such information. A loan evaluated for impairment is considered to be impaired when, based on current information and events, it is probable that we will be unable to collect all amounts due according to the contractual terms of the loan agreement. All loans identified as impaired are evaluated independently. The Company does not aggregate such loans for evaluation purposes. Impairment is measured on a loan-by-loan basis for commercial and construction loans by the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s obtainable market price, or the fair value of the collateral if the loan is collateral-dependent. Large groups of smaller balance homogeneous loans are collectively evaluated for impairment. Accordingly, the Company does not separately identify individual consumer and residential mortgage loans for impairment disclosures, unless such loans are part of a larger relationship that is impaired or are classified as a troubled debt restructuring (“TDR”). A loan is considered to be a TDR loan when the Company grants a concession to the borrower that it would not otherwise consider because of the borrower’s financial condition. Such concessions include the reduction of interest rates, forgiveness of principal or interest, or other modifications of interest rates that are less than the current market rate for new obligations with similar risk. TDR loans that are in compliance with their modified terms and that yield a market rate at the time of modification may be removed from TDR status after one year of performance. The following tables include the recorded investment and unpaid principal balances for impaired loans with the associated allowance amount at the dates indicated, if applicable (in thousands): Recorded Investment Unpaid Principal Balance Associated Allowance December 31, 2021 With no specific allowance recorded: Real estate loans Residential $ 2,088 $ 3,004 $ - Construction - - - Commercial 11,011 12,634 - Commercial - 23 - Obligations of states and political subdivisions - - - Home equity loans and lines of credit 297 333 - Auto loans 26 40 - Other 8 20 - Total 13,430 16,054 - With an allowance recorded: Real estate loans Residential 137 142 16 Construction - - - Commercial 13 19 13 Commercial 1,247 1,368 472 Obligations of states and political subdivisions - - - Home equity loans and lines of credit - - - Auto loans 18 18 3 Other - - - Total 1,415 1,547 504 Total: Real estate loans Residential 2,225 3,146 16 Construction - - - Commercial 11,024 12,653 13 Commercial 1,247 1,391 472 Obligations of states and political subdivisions - - - Home equity loans and lines of credit 297 333 - Auto loans 44 58 3 Other 8 20 - Total Impaired Loans $ 14,845 $ 17,601 $ 504 Recorded Investment Unpaid Principal Balance Associated Allowance September 30, 2021 With no specific allowance recorded: Real Estate Loans Residential $ 2,538 $ 3,610 $ - Construction - - - Commercial 11,152 13,030 - Commercial 165 176 - Obligations of states and political subdivisions - - - Home equity loans and lines of credit 336 368 - Auto Loans 39 60 - Other 8 21 - Total 14,238 17,265 - With an allowance recorded: Real Estate Loans Residential 108 112 17 Construction - - - Commercial 14 19 14 Commercial 1,190 1,298 397 Obligations of states and political subdivisions - - - Home equity loans and lines of credit - - - Auto Loans - - - Other - - - Total 1,312 1,429 428 Total: Real Estate Loans Residential 2,646 3,722 17 Construction - - - Commercial 11,166 13,049 14 Commercial 1,355 1,474 397 Obligations of states and political subdivisions - - - Home equity loans and lines of credit 336 368 - Auto Loans 39 60 - Other 8 21 - Total Impaired Loans $ 15,550 $ 18,694 $ 428 The following table represents the average recorded investments in the impaired loans and the related amount of interest recognized during the time within the period that the impaired loans were impaired (in thousands): For the Three Months Ended December 31, 2021 2020 2021 2020 Average Recorded Investment Average Recorded Investment Interest Income Recognized Interest Income Recognized With no specific allowance recorded: Real estate loans Residential $ 2,292 $ 1,436 $ 2 $ 1 Construction - - - - Commercial 11,049 11,131 - - Commercial 109 1,313 - - Obligations of states and political subdivisions - - - - Home equity loans and lines of credit 310 109 - - Auto loans 23 55 - - Other - 11 - - Total 13,783 14,055 2 1 With an allowance recorded: Real estate loans Residential 118 221 - - Construction - - - - Commercial 13 2,581 - - Commercial 1,173 37 - - Obligations of states and political subdivisions - - - - Home equity loans and lines of credit - - - - Auto loans 10 40 - - Other - - - - Total 1,314 2,879 - - Total: Real estate loans Residential 2,410 1,657 2 1 Construction - - - - Commercial 11,062 13,712 - - Commercial 1,282 1,350 - Obligations of states and political subdivisions - - - - Home equity loans and lines of credit 310 109 - - Auto loans 33 95 - - Other - 11 - - Total Impaired Loans $ 15,097 $ 16,934 $ 2 $ 1 The Company uses a ten-point internal risk-rating system to monitor the credit quality of the overall loan portfolio. The first six categories are considered not criticized and are aggregated as Pass-rated. The criticized rating categories utilized by management generally follow bank regulatory definitions. The Special Mention category includes assets that are fundamentally sound yet exhibit potentially unacceptable credit risk or deteriorating trends or characteristics which, if left uncorrected, may result in deterioration of the repayment prospects for the asset or in the Company’s credit position at some future date. Loans in the Substandard category have well-defined weaknesses that jeopardize the liquidation of the debt and have a distinct possibility that some loss will be sustained if the weaknesses are not corrected. All loans that are 90 or more days past due are considered Substandard. Loans in the Doubtful category have all the weaknesses inherent in loans classified as Substandard with the added characteristic that their weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. Loans in the Loss category are considered uncollectible and of little value that their continuance as bankable assets is not warranted. Certain residential real estate loans, construction loans, home equity loans and lines of credit, auto loans and other consumer loans are underwritten and structured using standardized criteria and characteristics, primarily payment performance, and are normally risk rated and monitored collectively on a monthly basis. These are typically loans to individuals in the consumer categories and are delineated as either performing or non-performing. To help ensure that risk ratings are accurate and reflect the present and future capacity of borrowers to repay a loan as agreed, the Bank has a structured loan rating process with several layers of internal and external oversight. Generally, consumer and residential mortgage loans are included in the Pass categories unless a specific action, such as bankruptcy, repossession, or death occurs to raise awareness of a possible credit event. The Bank’s commercial loan officers are responsible for the timely and accurate risk rating recommendation for the loans in their portfolios at origination and on an ongoing basis. The Bank’s commercial loan officers perform an annual review of all commercial relationships $750,000 or greater. Confirmation of the appropriate risk grade is included in the review on an ongoing basis. The Bank engages an external consultant to conduct loan reviews on at least a semi-annual basis. Generally, the external consultant reviews commercial relationships greater than $1,000,000 and/or all criticized relationships. Detailed reviews, including plans for resolution, are performed on loans classified as Substandard on a quarterly basis. Loans in the Special Mention and Substandard categories that are collectively evaluated for impairment are given separate consideration in the determination of the allowance. The following tables present the classes of the loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard, and Doubtful or Loss within the internal risk rating system at December 31, 2021 and September 30, 2021 (in thousands): Pass Special Mention Substandard Doubtful or Loss Total December 31, 2021 Commercial real estate loans $ 577,343 $ 12,686 $ 25,579 $ - $ 615,608 Commercial 52,540 2,114 1,894 - 56,548 Obligations of states and political subdivisions 37,804 - - - 37,804 Total $ 667,687 $ 14,800 $ 27,473 $ - $ 709,960 Pass Special Mention Substandard Doubtful or Loss Total September 30, 2021 Commercial real estate loans $ 549,360 $ 20,184 $ 21,573 $ - $ 591,117 Commercial 61,657 141 1,702 - 63,500 Obligations of states and political subdivisions 56,164 - - - 56,164 Total $ 667,181 $ 20,325 $ 23,275 $ - $ 710,781 All other loans are underwritten and structured using standardized criteria and characteristics, primarily payment performance, and are normally risk rated and monitored collectively on a monthly basis. These are typically loans to individuals in the consumer categories and are delineated as either performing or non-performing. The following tables present the risk ratings in the consumer categories of performing and non-performing loans at December 31, 2021 and September 30, 2021 (in thousands): Performing Non- performing Total December 31, 2021 Real estate loans: Residential $ 578,016 $ 2,276 $ 580,292 Construction 18,003 - 18,003 Home equity loans and lines of credit 36,968 416 37,384 Auto loans 10,278 61 10,339 Other 1,521 12 1,533 Total $ 644,786 $ 2,765 $ 647,551 Performing Non- performing Total September 30, 2021 Real estate loans: Residential $ 577,448 $ 2,865 $ 580,313 Construction 14,013 - 14,013 Home equity loans and lines of credit 37,963 463 38,426 Auto loans 13,809 43 13,852 Other 1,567 14 1,581 Total $ 644,800 $ 3,385 $ 648,185 The Company further monitors the performance and credit quality of the loan portfolio by analyzing the age of the portfolio as determined by the length of time a recorded payment is past due. The following tables present the classes of the loan portfolio summarized by the aging categories of performing loans, purchased credit impaired loans and nonaccrual loans as of December 31, 2021 and September 30, 2021 (in thousands): 31-60 Days 61-89 Days 90 + Days Total Purchased Total Current Past Due Past Due Past Due Past Due Credit Impaired Loans December 31, 2021 Real estate loans: Residential $ 577,525 $ 1,021 $ 510 $ 1,236 $ 2,767 $ - $ 580,292 Construction 18,003 - - - - - 18,003 Commercial 608,498 202 - 6,262 6,464 646 615,608 Commercial 55,359 - 32 1,157 1,189 - 56,548 Obligations of states and political subdivisions 37,804 - - - - - 37,804 Home equity loans and lines of credit 37,174 41 49 120 210 - 37,384 Auto loans 10,145 183 11 - 194 - 10,339 Other 1,453 53 27 - 80 - 1,533 Total $ 1,345,961 $ 1,500 $ 629 $ 8,775 $ 10,904 $ 646 $ 1,357,511 31-60 Days 61-89 Days 90 + Days Total Purchased Total Current Past Due Past Due Past Due Past Due Credit Impaired Loans September 30, 2021 Real estate loans: Residential $ 576,960 $ 1,029 $ 580 $ 1,744 $ 3,353 $ - $ 580,313 Construction 14,013 - - - $ - - 14,013 Commercial 587,779 111 - 2,350 $ 2,461 877 591,117 Commercial 62,243 - - 1,257 $ 1,257 - 63,500 Obligations of states and political subdivisions 56,164 - - - $ - - 56,164 Home equity loans and lines of credit 38,223 44 - 159 $ 203 - 38,426 Auto loans 13,576 271 5 - $ 276 - 13,852 Other 1,513 59 - 9 $ 68 - 1,581 Total $ 1,350,471 $ 1,514 $ 585 $ 5,519 $ 7,618 $ 877 $ 1,358,966 Non-Accrual Loans December 31, 2021 September 30, 2021 Real estate loans: Residential $ 2,276 $ 2,865 Construction - - Commercial 14,909 11,124 Commercial 1,250 1,358 Obligations of states and political subdivisions - - Home equity loans and lines of credit 416 463 Auto loans 61 43 Other 12 14 Total $ 18,924 $ 15,867 The allowance for loan losses is maintained at a level necessary to absorb loan losses that are both probable and reasonably estimable. Management, in determining the allowance for loan losses, considers the losses inherent in its loan portfolio and changes in the nature and volume of loan activities, along with the general economic and real estate market conditions. The allowance for loan losses consists of two elements: (1) an allocated allowance, which comprises allowances established on specific loans and class allowances based on historical loss experience and current trends, and (2) an unallocated allowance based on general economic conditions and other risk factors in our markets and portfolios. We maintain a loan review system, which allows for a periodic review of our loan portfolio and the early identification of potential impaired loans. Such system takes into consideration, among other things, delinquency status, size of loans, type and market value of collateral and financial condition of the borrowers. General loan loss allowances are based upon a combination of factors including, but not limited to, actual loan loss experience, composition of the loan portfolio, current economic conditions, management’s judgment and losses which are probable and reasonably estimable. In addition, for the three months ended December 31, 2021, consideration was given and a credit provision was recorded for loans granted short term payment relief due to the COVID pandemic. The allowance is increased through provisions charged against current earnings and recoveries of previously charged- off loans. Loans that are determined to be uncollectible are charged against the allowance. While management uses available information to recognize probable and reasonably estimable loan losses, future loss provisions may be necessary, based on changing economic conditions. Payments received on impaired loans generally are either applied against principal or reported as interest income, according to management’s judgment as to the collectability of principal. The allowance for loan losses as of December 31 , 2021 was maintained at a level that represents management’s best estimate of losses inherent in the loan portfolio, and such losses were both probable and reasonably estimable. In addition, the FDIC and the Pennsylvania Department of Banking and Securities, as an integral part of their examination process, have periodically reviewed our allowance for loan losses. The banking regulators may require that we recognize additions to the allowance based on its analysis and review of information available to it at the time of its examination. Management reviews the loan portfolio on a quarterly basis using a defined, consistently applied process in order to make appropriate and timely adjustments to the allowance for loan losses (“ALL”). When information confirms all or part of specific loans to be uncollectible, these amounts are promptly charged off against the ALL. The following table summarizes changes in the primary segments of the ALL for the three months ended December 31, 2021 and 2020 (in thousands): Home Obligations of Equity States and Loans and Real Estate Loans Commercial Political Lines of Other Residential Construction Commercial Loans Subdivisions Credit Auto Loans Loans Unallocated Total ALL balance at September 30, 2021 $ 4,114 $ 187 $ 10,470 $ 1,041 $ 393 $ 318 $ 232 $ 21 $ 1,337 $ 18,113 Charge-offs (6 ) - - - - - (6 ) - - (12 ) Recoveries 72 - 1 - - 2 34 - - 109 Provision (82 ) 54 136 183 (128 ) (23 ) (64 ) - (76 ) - ALL balance at December 31, 2021 $ 4,098 $ 241 $ 10,607 $ 1,224 $ 265 $ 297 $ 196 $ 21 $ 1,261 $ 18,210 ALL balance at September 30, 2020 $ 4,301 $ 127 $ 7,209 $ 874 $ 555 $ 337 $ 780 $ 25 $ 1,192 $ 15,400 Charge-offs - - (76 ) (9 ) - (8 ) (155 ) (1 ) - (249 ) Recoveries - - 17 - - 1 72 - - 90 Provision 206 8 712 39 (47 ) 20 (77 ) (2 ) 41 900 ALL balance at December 31, 2020 $ 4,507 $ 135 $ 7,862 $ 904 $ 508 $ 350 $ 620 $ 22 $ 1,233 $ 16,141 During the three months ended December 31, 2021, the Company recorded provision expense for the construction real estate loans, commercial real estate loans and commercial loans segments, due to either increased loan balances, changes in the loan mix within the pool, and/or charge-off activity in those segments. Provision expense was also recorded for possible loan losses due to the economic slowdown caused by COVID-19 restrictions. Credit provisions were recorded for loan loss for the residential real estate loans, obligations of states and political subdivisions, home equity loans and lines of credit and auto loans segments due to either decreased loan balances, changes in the loan mix within the pool, and/or decreased charge-off activity in those segments. During the three months ended December 31, 2020, the Company recorded provision expense for the residential real estate loans, construction real estate loans, commercial real estate loans, commercial loans, construction loans and home equity loans and lines of credit segments, due to either increased loan balances, changes in the loan mix within the pool, and/or charge-off activity in those segments. Provision expense was also recorded for possible loan losses due to the economic slowdown caused by COVID-19 restrictions. Credit provisions were recorded for loan loss for the obligations of states and political subdivisions, auto loan and other loan segments due to either decreased loan balances, changes in the loan mix within the pool, and/or decreased charge-off activity in those segments. The Company is closely monitoring all customer credit positions, particularly loans requesting payment relief. Such loans, as of December 31, 2021, amounted to approximately 1.4% of total loans outstanding, including $18.8 million in commercial real estate loans and $369,000 in commercial loans. As the economic impact of the COVID-19 pandemic continues to evolve, our customers may experience decreased cash flows, which may correlate to an inability to make timely loan payments. This, in turn, may require increases in our allowance for loan losses and increases in the level of charge-offs in our loan portfolio. The following table summarizes the primary segments of the ALL, segregated into two categories, the amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment as of December 31, 2021 and September 30, 2021 (in thousands): Home Obligations of Equity States and Loans and Real Estate Loans Commercial Political Lines of Other Residential Construction Commercial Loans Subdivisions Credit Auto Loans Loans Unallocated Total Individually evaluated for impairment $ 16 $ - $ 13 $ 472 $ - $ - $ 3 $ - $ - $ 504 Collectively evaluated for impairment 4,082 241 10,594 752 265 297 193 21 1,261 17,706 ALL balance at December 31, 2021 $ 4,098 $ 241 $ 10,607 $ 1,224 $ 265 $ 297 $ 196 $ 21 $ 1,261 $ 18,210 Individually evaluated for impairment $ 17 $ - $ 14 $ 397 $ - $ - $ - $ - $ - $ 428 Collectively evaluated for impairment 4,097 187 10,456 644 393 318 232 21 1,337 17,685 ALL balance at September 30, 2021 $ 4,114 $ 187 $ 10,470 $ 1,041 $ 393 $ 318 $ 232 $ 21 $ 1,337 $ 18,113 The allowance for loan losses is based on estimates, and actual losses will vary from current estimates. Management believes that the granularity of the homogeneous pools and the related historical loss ratios and other qualitative factors, as well as the consistency in the application of assumptions, result in an ALL that is representative of the risk found in the components of the portfolio at any given date. Despite the above allocations, the allowance for loan losses is general in nature and is available to absorb losses from any loan segment. There were no new troubled debt restructurings granted for the three months ended December 31, 2021 and 2020. For the three months ended December 31, 2021 and 2020, no loans defaulted on a restructuring agreement within one year of modification. The Company continues to closely monitor all customer credit positions, particularly loans requesting payment relief. As of December 31, 2021, eight of our commercial clients had requested loan payment deferrals or payments of interest only on loans totaling $19.2 million. In accordance with interagency guidance issued in March 2020, these short-term deferrals are not considered troubled debt restructurings unless the borrower was previously experiencing financial difficulty. As the economic impact of the COVID-19 pandemic continues to evolve, our customers may experience decreased cash flows, which may correlate to an inability to make timely loan payments. This, in turn may require increases in our allowance for loan losses and increases in the level of chargeoffs in our loan portfolio. There can be no assurance that our non-performing assets will not increase in the future due to the impact of COVID-19 or otherwise. We will continue to closely monitor credit risk and our exposure to increased loan losses resulting from the impact of COVID-19 on our commercial and consumer clients.

Deposits

Deposits	3 Months Ended
	Dec. 31, 2021
Deposits Liabilities Disclosures [Abstract]
Deposits	7. Deposits Deposits consist of the following major classifications (in thousands): December 31, 2021 September 30, 2021 Non-interest bearing demand accounts $ 275,090 $ 257,747 Interest bearing demand accounts 508,228 551,168 Money market accounts 458,741 428,272 Savings and club accounts 193,022 189,004 Certificates of deposit 199,653 209,924 Total $ 1,634,734 $ 1,636,115

Net Periodic Benefit Cost-Defin

Net Periodic Benefit Cost-Defined Benefit Plan	3 Months Ended
	Dec. 31, 2021
Compensation And Retirement Disclosure [Abstract]
Net Periodic Benefit Cost-Defined Benefit Plan	8 . Net Periodic Benefit Cost-Defined Benefit Plan For a detailed disclosure on the Bank’s pension and employee benefits plans, please refer to Note 12 of the Company’s Consolidated Financial Statements for the year ended September 30, 2021 included in the Company’s Annual Report on Form 10-K. The following table comprises the components of net periodic benefit cost for the three month periods ended December 31, 2021 and 2020 (in thousands): For the Three Months Ended December 31, 2021 2020 Service Cost $ - $ - Interest Cost 125 113 Expected return on plan assets (333 ) (289 ) Partial settlement 138 - Amortization of net loss from earlier periods 1 55 Net periodic benefit income $ (69 ) $ (121 ) The Company’s board of directors adopted resolutions to freeze the status of the Defined Benefit Plan (“the plan”) effective February 28, 2017 (“the freeze date”). Accordingly, no additional participants will enter the plan after February 28, 2017; no additional years of service for benefit accrual purposes will be credited after the freeze date under the plan; and compensation earned by participants after the freeze date will not be taken into account under the plan.

Equity Incentive Plan

Equity Incentive Plan	3 Months Ended
	Dec. 31, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Equity Incentive Plan	9 . Equity Incentive Plan The Company previously maintained the ESSA Bancorp, Inc. 2007 Equity Incentive Plan (the “Plan”). The Plan provided for a total of 2,377,326 shares of common stock for issuance upon the grant or exercise of awards. Of the shares that were available under the Plan, 1,698,090 were available to be issued in connection with the exercise of stock options and 679,236 were available to be issued as restricted stock. The Plan allowed for the granting of non-qualified stock options (“NSOs”), incentive stock options (“ISOs”), and restricted stock. Options granted under the plan were granted at no less than the fair value of the Company’s common stock on the date of the grant. As of the effective date of the 2016 Equity Incentive Plan (detailed below), no further grants will be made under the Plan and forfeitures of outstanding awards under the Plan will be added to the shares available under the 2016 Equity Incentive Plan. The Company replaced the 2007 Equity Incentive Plan with the ESSA Bancorp, Inc. 2016 Equity Incentive Plan (the “2016 Plan”) which was approved by shareholders on March 3, 2016. The 2016 Plan provides for a total of 250,000 shares of common stock for issuance upon the grant or exercise of awards. The 2016 Plan allows for the granting of restricted stock, restricted stock units, ISOs and NSOs. The Company classifies share-based compensation for employees and outside directors within “Compensation and employee benefits” in the Consolidated Statement of Operations to correspond with the same line item as compensation paid. Restricted stock shares outstanding at December 31, 2021 vest over periods ranging from 9 to 45 months. The product of the number of shares granted and the grant date market price of the Company’s common stock determines the fair value of restricted shares under the Company’s restricted stock plan. The Company expenses the fair value of all share based compensation grants over the requisite service period. For the three months ended December 31, 2021 and 2020, the Company recorded $262,000 and $232,000 of share-based compensation expense, respectively, comprised of restricted stock expense. Expected future compensation expense relating to the restricted shares outstanding at December 31, 2021 is $876,000 over the remaining vesting period of 3.75 years. The following is a summary of the status of the Company’s restricted stock as of December 31, 2021, and changes therein during the three month period then ended: Number of Restricted Weighted- average Grant Date Fair Value Nonvested at September 30, 2021 42,116 $ 13.99 Granted 33,580 16.46 Vested (625 ) 15.39 Forfeited (5,451 ) 14.91 Nonvested at December 31, 2021 69,620 $ 15.10

Fair Value

Fair Value	3 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value	10. Fair Value The following disclosures show the hierarchal disclosure framework associated within the level of pricing observations utilized in measuring assets and liabilities at fair value. The definition of fair value maintains the exchange price notion in earlier definitions of fair value but focuses on the exit price of the asset or liability. The exit price is the price that would be received to sell the asset or paid to transfer the liability adjusted for certain inherent risks and restrictions. Expanded disclosures are also required about the use of fair value to measure assets and liabilities. Assets and Liabilities Required to be Measured and Reported at Fair Value on a Recurring Basis The following tables provide the fair value for assets and liabilities required to be measured and reported at fair value on a recurring basis on the Consolidated Balance Sheet as of December 31, 2021 and September 30, 2021 by level within the fair value hierarchy (in thousands). Recurring Fair Value Measurements at Reporting Date December 31, 2021 Assets Level I Level II Level III Total Investment securities available for sale: Mortgage backed securities $ - $ 49,258 $ - $ 49,258 Obligations of states and political subdivisions - 13,197 - 13,197 U.S. government treasury securities - 30,000 - 30,000 Corporate obligations - 58,086 10,937 69,023 Other debt securities - 10,676 - 10,676 Total debt securities $ - $ 161,217 $ 10,937 $ 172,154 Equity securities- financial services 33 - - 33 Derivatives and hedging activities - 5,030 - 5,030 Liabilities Derivatives and hedging activities - 1,875 - 1,875 September 30, 2021 Assets Level I Level II Level III Total Investment securities available for sale: Mortgage backed securities $ - $ 55,068 $ - $ 55,068 Obligations of states and political subdivisions - 13,246 - 13,246 U.S. government treasury securities - 99,997 - 99,997 U.S. government agencies - 2,002 - 2,002 Corporate obligations - 47,505 11,112 58,617 Other debt securities - 11,651 - 11,651 Total debt securities $ - $ 229,469 $ 11,112 $ 240,581 Equity securities-financial services 32 - - 32 Derivatives and hedging activities - 2,554 - 2,554 Liabilities: Derivatives and hedging activities - 1,755 - 1,755 The following table presents a summary of changes in the fair value of the Company’s Level III investments for the three month periods ended December 31, 2021 and 2020 (in thousands). Fair Value Measurement Using Significant Unobservable Inputs (Level III) Three Months Ended December 31, 2021 December 31, 2020 Beginning balance $ 11,112 $ 8,260 Purchases, sales, issuances, settlements, net - (3,000 ) Total unrealized (loss) gain: Included in earnings - - Included in other comprehensive (loss) income (175 ) 128 Transfers in and/or out of Level III - - $ 10,937 $ 5,388 Each financial asset and liability is identified as having been valued according to a specified level of input, 1, 2 or 3. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date. Fair values determined by Level 2 inputs utilize inputs other than quoted prices included in Level 1 that are observable for the asset, either directly or indirectly. Level 2 inputs include quoted prices for similar assets in active markets, and inputs other than quoted prices that are observable for the asset or liability. Level 3 inputs are unobservable inputs for the asset, and include situations where there is little, if any, market activity for the asset or liability. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, the level in the fair value hierarchy, within which the fair value measurement in its entirety falls, has been determined based on the lowest level input that is significant to the fair value measurement in its entirety. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset. The measurement of fair value should be consistent with one of the following valuation techniques: market approach, income approach, and/or cost approach. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities (including a business). For example, valuation techniques consistent with the market approach often use market multiples derived from a set of comparable. Multiples might lie in ranges with a different multiple for each comparable. The selection of where within the range the appropriate multiple falls requires judgment, considering factors specific to the measurement (qualitative and quantitative). Valuation techniques consistent with the market approach include matrix pricing. Matrix pricing is a mathematical technique used principally to value debt securities without relying exclusively on quoted prices for the specific securities, but rather by relying on a security’s relationship to other benchmark quoted securities. Most of the securities classified as available for sale are reported at fair value utilizing Level 2 inputs. For these securities, the Company obtains fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quoted market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things. Securities reported at fair value utilizing Level 1 inputs are limited to actively traded equity securities whose market price is readily available from the New York Stock Exchange or the NASDAQ exchange. A few securities are valued using Level 3 inputs, all of these are classified as available for sale and are reported at fair value using Level 3 inputs. Assets and Liabilities Required to be Measured and Reported on a Non-Recurring Basis The following tables provide the fair value for assets required to be measured and reported at fair value on a non recurring basis on the Consolidated Balance Sheet as of December 31, 2021 and September 30, 2021 by level within the fair value hierarchy: Non-Recurring Fair Value Measurements at Reporting Date (in thousands) December 31, 2021 Level I Level II Level III Total Foreclosed real estate $ - $ - $ 193 $ 193 Impaired loans - - 14,341 14,341 September 30, 2021 Level I Level II Level III Total Foreclosed real estate $ - $ - $ 461 $ 461 Impaired loans - - 15,122 15,122 The following tables present additional quantitative information about assets measured at fair value on a nonrecurring basis and for which the Company has utilized Level 3 inputs to determine fair value: Quantitative Information about Level 3 Fair Value Measurements (dollars in thousands) Fair Value Estimate Valuation Techniques Unobservable Input Range December 31, 2021 Impaired loans $ 14,341 Appraisal of collateral (1) Appraisal adjustments (2) 0% to 50% (24.8%) Foreclosed real estate owned 193 Appraisal of collateral (1) Appraisal adjustments (2) 20% to 35% (24.7%) Quantitative Information about Level 3 Fair Value Measurements (dollars in thousands) Fair Value Estimate Valuation Techniques Unobservable Input Range September 30, 2021 Impaired loans $ 15,122 Appraisal of collateral (1) Appraisal adjustments (2) 0% to 50% (24.1%) Foreclosed real estate owned 461 Appraisal of collateral (1) Appraisal adjustments (2) 20% to 35% (20.1%) (1) Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various level 3 inputs which are not identifiable. (2) Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range of liquidation expenses and other appraisal adjustments are presented as a percent of the appraisal. Foreclosed real estate is measured at fair value, less cost to sell at the date of foreclosure, valuations are periodically performed by management and the assets are carried at the lower of carrying amount or fair value, less cost to sell. Income and expenses from operations and changes in valuation allowance are included in the net expenses from foreclosed real estate. Impaired loans are reported at fair value utilizing level three inputs. For these loans, a review of the collateral is conducted and an appropriate allowance for loan losses is allocated to the loan. At December 31, 2021, 74 impaired loans with a carrying value of $14.8 million were reduced by specific valuation allowance totaling $504,000 resulting in a net fair value of $14.3 million based on Level 3 inputs. At September 30, 2021, 76 impaired loans with a carrying value of $15.6 million were reduced by a specific valuation totaling $428,000 resulting in a net fair value of $15.1 million based on Level 3 inputs. Assets and Liabilities not Required to be Measured and Reported at Fair Value The following tables provide the carrying value and fair value for certain financial instruments that are not required to be measured or reported at fair value on the consolidated Balance Sheet at December 31, 2021 and September 30, 2021 by level within the fair value hierarchy: December 31, 2021 (in thousands) Carrying Level I Level II Level III Total Fair Value Financial assets: Investment securities held to maturity $ 55,747 $ - $ - $ 53,089 $ 53,089 Loans receivable, net 1,339,301 - - 1,344,491 1,344,491 Mortgage servicing rights 833 - - 1,130 1,130 Financial liabilities: Deposits $ 1,634,734 $ 1,435,081 $ - $ 196,193 $ 1,631,274 September 30, 2021 (in thousands) Carrying Level I Level II Level III Total Fair Value Financial assets: Investment securities held to maturity $ 21,483 $ 21,249 $ 21,249 Loans receivable, net 1,340,853 - - 1,353,420 1,353,420 Mortgage servicing rights 763 - - 998 998 Financial liabilities: Deposits $ 1,636,115 $ 1,426,191 $ - $ 209,660 $ 1,635,851

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	11. Accumulated Other Comprehensive Income (Loss) The activity in accumulated other comprehensive income (loss) for the three month periods ended December 31, 2021 and 2020 is as follows (in thousands): Accumulated Other Comprehensive Income/(Loss) Defined Benefit Pension Plan Unrealized (Losses) on Securities Available for Sale Derivatives Total Balance at September 30, 2021 $ (1,907 ) $ 1,962 $ 627 $ 682 Other comprehensive income (loss) before reclassifications 763 (843 ) 1,690 1,610 Amounts reclassified from accumulated other comprehensive income (loss) 110 - 187 297 Period change 873 (843 ) 1,877 1,907 Balance at December 31, 2021 $ (1,034 ) $ 1,119 $ 2,504 $ 2,589 Balance at September 30, 2020 $ (3,432 ) $ 3,167 $ (3,791 ) $ (4,056 ) Other comprehensive income (loss) before reclassifications - (178 ) 410 232 Amounts reclassified from accumulated other comprehensive income (loss) - - 527 527 Period change - (178 ) 937 759 Balance at December 31, 2020 $ (3,432 ) $ 2,989 $ (2,854 ) $ (3,297 ) The following table presents significant amounts reclassified out of each component of accumulated other comprehensive income (loss) for the three month periods ended December 31, 2021 and 2020 (in thousands): Amount Reclassified from Accumulated Other Comprehensive Income (Loss) Details About Accumulated Other Comprehensive Income (Loss) Components Accumulated Other Comprehensive Income (Loss) for the Three Months Ended December 31, Affected Line Item in the Consolidated Statement of Operations 2021 2020 Securities available for sale Net securities gains reclassified into earnings $ - $ - Gain on sale of investment securities available for sale, net Related income tax expense - - Income taxes Net effect on accumulated other comprehensive income (loss) for the period - - Defined benefit pension plan Amortization of net gain and prior service costs (139 ) - Compensation and employee benefits Related income tax expense 29 - Income taxes Net effect on accumulated other comprehensive income (loss) for the period (110 ) - Derivatives and hedging activities: Interest expense, effective portion (236 ) (667 ) Interest expense Related income tax expense 49 140 Income taxes Net effect on accumulated other comprehensive income (loss) for the period (187 ) (527 ) Total reclassification for the period $ (297 ) $ (527 )

Derivative and Hedging Activiti

Derivative and Hedging Activities	3 Months Ended
	Dec. 31, 2021
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	12. Derivatives and Hedging Activities Risk Management Objective of Using Derivatives The Company is exposed to certain risks arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity, and credit risk, primarily by managing the amount, sources, and duration of its assets and liabilities and through the use of derivative financial instruments. Specifically, the Company enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally related to certain variable rate borrowings. Fair Values of Derivative Instruments on the Consolidated Balance Sheet The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the Consolidated Balance Sheet as of December 31, 2021 and September 30, 2021 (in thousands). Fair Values of Derivative Instruments Asset Derivatives As of December 31, 2021 As of September 30, 2021 Hedged Item Notional Amount Balance Sheet Location Fair Value Notional Amount Balance Sheet Location Fair Value Brokered Deposits $ 200,000 Other Assets $ 3,298 $ 175,000 Other Assets $ 1,247 Commercial Loans 77,336 Other Assets 1,732 71,326 Other Assets 1,307 Total $ 277,336 $ 5,030 $ 246,326 $ 2,554 Fair Values of Derivative Instruments Liability Derivatives As of December 31, 2021 As of September 30, 2021 Hedged Item Notional Amount Balance Sheet Location Fair Value Notional Amount Balance Sheet Location Fair Value Brokered Deposits $ 25,000 Other Liabilities $ 129 $ 60,000 Other Liabilities $ 452 Commercial Loans 109,791 Other Liabilities 1,746 103,831 Other Liabilities 1,303 Total $ 134,791 $ 1,875 $ 163,831 $ 1,755 Cash Flow Hedges of Interest Rate Risk The Company’s objectives in using interest rate derivatives are to add stability to interest income and expense and to manage its exposure to interest rate movements. To accomplish this objective, the Company has entered into interest rate swaps as part of its interest rate risk management strategy. These interest rate swaps are designated as cash flow hedges and involve the receipt of variable rate amounts from a counterparty in exchange for the Company making fixed payments. As of December 31, 2021, the Company had ten interest rate swaps with a notional principal amount of $225.0 million associated with the Company’s cash outflows associated with various brokered certificates and $187.1 million associated with associated with various commercial loans. For derivatives designated as cash flow hedges, the effective portion of changes in the fair value of the derivative is initially reported in other comprehensive income (outside of earnings), net of tax, and subsequently reclassified to earnings when the hedged transaction affects earnings, and the ineffective portion of changes in the fair value of the derivative is recognized directly in earnings. The Company assesses the effectiveness of each hedging relationship by comparing the changes in cash flows of the derivative hedging instrument with the changes in cash flows of the designated hedged transactions. The Company did not recognize any hedge ineffectiveness in earnings during the periods ended December 31, 2021 and 2020. Amounts reported in accumulated other comprehensive income (loss) related to derivatives that will be reclassified to interest income/expense as interest payments are made/received on the Company’s variable-rate assets/liabilities. During the three months ended December 31, 2021 and 2020, the Company had $236,000 and $667,000 of losses respectively, which resulted in an increase to interest expense. During the next twelve months, the Company estimates that $20,000 will be reclassified as an increase to interest expense. The table below presents the effect of the Company’s cash flow hedge accounting on Accumulated Other Comprehensive Income (Loss) for the three month periods ended December 31, 2021 and 2020 (in thousands). The Effect of Fair Value and Cash Flow Hedge Accounting on Accumulated Other Comprehensive Income (Loss) Derivatives in Hedging Relationships Loss Recognized in OCI on Derivative (Effective Portion) Three Months Ended December 31, Location of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) Loss Recognized in OCI on Derivative (Effective Portion) Three Months Ended December 31, Derivatives in Cash Flow Hedging Relationships 2021 2020 2021 2020 Interest Rate Products $ 2,375 $ 1,181 Interest expense $ (236 ) $ (667 ) Total $ 2,375 $ 1,181 $ (236 ) $ (667 ) Credit-risk-related Contingent Features The Company has agreements with its derivative counterparties that contain a provision where if the Company defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the Company could also be declared in default on its derivative obligations. The Company also has agreements with certain of its derivative counterparties that contain a provision where if the Company fails to maintain its status as a well / adequately capitalized institution, then the counterparty could terminate the derivative positions and the Company would be required to settle its obligations under the agreements. As of December 31, 2021, the Company had no derivatives in a net liability position and was not required to post collateral against its obligations under these agreements. As of September 30, 2021, the Company was required to post $640,000 in collateral against its obligations under these agreements. If the Company had breached any of these provisions at December 31, 2021 and September 30, 2021, it could have been required to settle its obligations under the agreements at the termination value.

Contingent Liabilities

Contingent Liabilities	3 Months Ended
	Dec. 31, 2021
Commitments And Contingencies Disclosure [Abstract]
Contingent Liabilities	13. Contingent Liabilities Legal Proceedings The Company and its subsidiaries are subject to various legal actions arising in the normal course of business. In the opinion of Management, the resolution of these legal actions is not expected to have a material adverse effect on the Company’s results of operations. The Bank was named as a defendant in an action commenced on December 8, 2016 by one plaintiff who will also seek to pursue this action as a class action on behalf of the entire class of people similarly situated. The plaintiff alleges that a bank previously acquired by ESSA Bancorp received unearned fees and kickbacks in the process of making loans, in violation of the Real Estate Settlement Procedures Act. In an order dated January 29, 2018, the district court granted the Bank’s motion to dismiss the case. The plaintiff appealed the court’s ruling. In an opinion and order dated April 26, 2019, the appellate court reversed the district court’s order dismissing the plaintiff’s case against the Bank, and remanded the case back to the district court in order to continue the litigation. The litigation is now proceeding before the district court. On December 9, 2019, the court permitted an amendment to the complaint to add two new plaintiffs to the case asserting similar claims. On May 21, 2020, the court granted the plaintiffs’ motion for class certification. In an order dated November 24, 2020, the court referred the case to a Magistrate Judge to assist in mediation efforts. The case was stayed while the parties explored the potential for a negotiated resolution. The parties engaged in mediation but did not resolve the matter. The parties are now in the discovery process. The Bank will continue to defend against plaintiffs’ allegations. To the extent that this matter could result in exposure to the Bank, the amount of such exposure is not currently estimable. On May 29, 2020, the Bank was named as a defendant in a second action commenced by three plaintiffs who will also seek to pursue this action as a class action on behalf of the entire class of people similarly situated. The plaintiffs allege that a bank previously acquired by ESSA Bancorp received unearned fees and kickbacks from a different title company than the one involved in the previously discussed litigation in the process of making loans. The original complaint alleged violations of the Real Estate Settlement Procedures Act, the Sherman Act, and the Racketeer Influenced and Corrupt Organizations Act (“RICO”). The plaintiffs filed an Amended Complaint on September 30, 2020 that dropped the RICO claim, but they are continuing to pursue the Real Estate Settlement Procedures Act and Sherman Act claims. The Bank moved to dismiss the Sherman Act claim on October 14, 2020, and that motion was denied on April 2, 2021. The parties are now in the discovery process. The Bank will continue to defend against plaintiffs’ allegations. To the extent that this matter could result in exposure to the Bank, the amount of such exposure is not currently estimable.

Revenue Recognition

Revenue Recognition	3 Months Ended
	Dec. 31, 2021
Revenue From Contract With Customer [Abstract]
Revenue Recognition	14. Management determined that the primary sources of revenue associated with financial instruments, including interest income on loans and investments, along with certain noninterest revenue sources including investment security gains, loan servicing charges, gains on the sale of loans, and earnings on bank owned life insurance are not within the scope of Topic 606. Noninterest income within the scope of Topic 606 are as follows: Trust and Investment Fees Trust and asset management income is primarily comprised of fees earned from the management and administration of trusts and other customer assets. The Company’s performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the month-end market value of the assets under management and the applicable fee rate. Payment is generally received a few days after month end through a direct charge to customer’s accounts. The Company does not earn performance-based incentives. Optional services such as real estate sales and tax return preparation services are also available to existing trust and asset management customers. The Company’s performance obligation for these transactional-based services is generally satisfied, and related revenue recognized, at a point in time ( i.e. as incurred). Payment is received shortly after services are rendered. Service Charges on Deposit Accounts Service charges on deposit accounts consist of account analysis fees (i.e. net fees earned on analyzed business and public checking accounts), monthly service fees, check orders, and other deposit account related fees. The Company’s performance obligation for account analysis fees and monthly service fees is generally satisfied, and the related revenue recognized, over the period in which the service is provided. Check orders and other deposit account related fees are largely transactional based, and therefore, the Company’s performance obligation is satisfied, and related revenue recognized, at a point in time. Payment for service charges on deposit accounts is primarily received immediately or in the following month through a direct charge to customers’ accounts. Fees, Exchange, and Other Service Charges Fees, interchange, and other service charges are primarily comprised of debit card income, ATM fees, cash management income, and other services charges. Debit card income is primarily comprised of interchange fees earned whenever the Company’s debit cards are processed through card payment networks such as Mastercard. ATM fees are primarily generated when a Company cardholder uses a non-Company ATM or a non-Company cardholder uses a company ATM. Other service charges include revenue from processing wire transfers, bill pay service, cashier’s checks, and other services. The Company’s performance obligation for fees, exchange, and other service charges are largely satisfied, and related revenue recognized when the services are rendered or upon completion. Payment is typically received immediately or in the following month. Insurance Commissions Insurance income primarily consists of commissions received on product sales. The Company acts as an intermediary between the Company’s customer and the insurance carrier. The Company’s performance obligation is generally satisfied upon the issuance of the policy. Shortly after the policy is issued, the carrier remits the commission payment to the Company, and the Company recognizes the revenue.

Leases

Leases	3 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Leases	15. A lease is defined as a contract, or part of a contract, that conveys the right to control the use of identified property, plant or equipment for a period of time in exchange for consideration. For the Company, Topic 842 primarily affects the accounting treatment for operating lease agreements in which the Company is the lessee. Lessee Accounting Substantially all of the leases in which the Company is the lessee are comprised of real estate property for branches, ATM locations, and office space with terms extending through 2044. With the adoption of Topic 842, operating lease agreements are required to be recognized on the Consolidated Balance sheet as a right-of-use (“ROU”) asset and a corresponding lease liability. The following table presents the Consolidated Balance Sheet classification of the Company’s ROU assets and lease liabilities. The Company elected not to include short-term leases (i.e., leases with initial terms of twelve months or less), or equipment leases (deemed immaterial) on the Consolidated Balance sheet. (in thousands) December 31, 2021 Lease Right-of-Use Assets Classification Operating lease right-of-use assets Other assets $ 6,698 Total Lease Right-Of-Use Assets $ 6,698 (in thousands) December 31, 2021 Lease Liabilities Classification Operating lease Liabilities Other liabilities $ 6,864 Total Lease Liabilities $ 6,864 (in thousands) September 30, 2021 Lease Right-of-Use Assets Classification Operating lease right-of-use assets Other assets $ 6,222 Total Lease Right-Of-Use Assets $ 6,222 (in thousands) September 30, 2021 Lease Liabilities Classification Operating lease Liabilities Other liabilities $ 6,370 Total Lease Liabilities $ 6,370 The calculated amount of the ROU assets and lease liabilities in the table above are impacted by the length of the lease term and the discount rate used to present value the minimum lease payments. The Company’s lease agreements often include one or more options to renew at the Company’s discretion. If at lease inception, the Company considers the exercising of a renewal option to be reasonably certain, the Company will include the extended term in the calculation of the ROU asset and lease liability. Regarding the discount rate, Topic 842 requires the use of the rate implicit in the lease whenever this rate is readily determinable. As this rate is rarely determinable, the Company utilizes its incremental borrowing rate at lease inception, on a collateralized basis, over a similar term. For operating leases existing prior to October 1, 2019, the rate for the remaining lease term as of October 1, 2019 was used. December 31, 2021 Weighted average remaining lease term Operating leases 12.4 years Weighted average discount rate Operating leases 2.34 % The following table represents lease costs and other lease information. As the Company elected, for all classes of underlying assets, not to separate lease and non-lease components and instead to account for them as a single lease component, the variable lease cost primarily represents variable payments such as common area maintenance and utilities. Lease Costs (in thousands) Three Months Ended December 31, 2021 Operating lease cost $ 261 Variable lease cost 79 Net lease cost $ 340 Lease Costs (in thousands) Three Months Ended December 31, 2020 Operating lease cost $ 263 Variable lease cost 64 Net lease cost $ 327 Future minimum payments for operating leases with initial or remaining terms of one year or more as of December 31, 2021 were as follows: (in thousands) Operating leases Twelve months Ended: December 31, 2022 $ 871 December 31, 2023 1,310 December 31, 2024 622 December 31, 2025 510 December 31, 2026 472 Thereafter 4,618 Total future minimum lease payments 8,403 Amounts representing interest 1,539 Present Value of Net Future Minimum Lease Payments $ 6,864

Accounting Pronouncements (Poli

Accounting Pronouncements (Policies)	3 Months Ended
	Dec. 31, 2021
Accounting Changes And Error Corrections [Abstract]
Adoption of New Standards and Recent Accounting Pronouncements	Adoption of New Standards In August 2018, the FASB issued ASU 2018-14, Compensation – Retirement Benefits (Topic 715-20) In January 2020, the FASB issued ASU 2020-4, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting In October 2020, the FASB issued ASU 2020-08, Codification Improvements to Subtopic 310-20, Receivables – Nonrefundable Fees and Other Costs, In January 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848) 2020 The adoption of ASU 2021-01 did not have a significant impact on the Company’s financial statements. Recent Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments allowance for credit losses should reflect management’s current estimate of credit losses that are expected to occur over the remaining life of a financial asset. The income statement will be effected for the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period. ASU 2016-13 is effective for annual and interim periods beginning after December 15, 2019, and early adoption is permitted for annual and interim periods beginning after December 15, 2018. With certain exceptions, transition to the new requirements will be through a cumulative effect adjustment to opening retained earnings as of the beginning of the first reporting period in which the guidance is adopted. In November 2019, the FASB issued ASU 2019-10, Financial Instruments ‒ Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842) . This Update defers the effective date of ASU 2016-13 for SEC filers that are eligible to be smaller reporting companies, non-SEC filers, and all other companies to fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. We expect to recognize a one-time cumulative effect adjustment to the allowance for loan losses as of the beginning of the first reporting period in which the new standard is effective, but cannot yet determine the magnitude of any such one-time adjustment or the overall impact of the new guidance on the consolidated financial statements. In May 2019, the FASB issued ASU 2019-05, Financial Instruments – Credit Losses, Topic 326 In November 2019, the FASB issued ASU 2019-11, Codification Improvements to Topic 326, Financial Instruments – Credit Losses In March 2020, the FASB issued ASU 2020-3 , Codification Improvements to Financial Instruments. Financial Instruments In August 2020, the FASB issued ASU 2020-06, Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40) assess the amount or timing of an entity’s future cash flows related to those instruments. The amendments in this ASU are effective for public business entities that are not smaller reporting companies, for fiscal years beginning after December 15, 2021, and interim periods within those fiscal years. For all other entities, this ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years. The guidance may be early adopted for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years. This Update is not expected to have a significant impact on the Company’s financial statements. In May 2021, the FASB issued ASU 2021-04, Earnings Per Share (Topic 260), Debt – Modifications and Extinguishments (Subtopic 470-50), Compensation – Stock Compensation (Topic 718), and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40), In July 2021, the FASB issued ASU 2021-05, Leases (Topic 842 In October 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers

Earnings per Share (Tables)

Earnings per Share (Tables)	3 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Composition of the Weighted-Average Common Shares (Denominator) Used in the Basic and Diluted Earnings Per Share Computation	The following table sets forth the composition of the weighted-average common shares (denominator) used in the basic and diluted earnings per share computation for the three month periods ended December 31, 2021 and 2020. Three Months Ended December 31, December 31, 2021 2020 Weighted-average common shares outstanding 18,133,095 18,133,095 Average treasury stock shares (7,643,827 ) (7,279,981 ) Average unearned ESOP shares (673,259 ) (718,523 ) Average unearned non-vested shares (56,760 ) (63,504 ) Weighted average common shares and common stock equivalents used to calculate basic earnings per share 9,759,249 10,071,087 Additional common stock equivalents (nonvested stock) used to calculate diluted earnings per share 12,297 2,820 Weighted average common shares and common stock equivalents used to calculate diluted earnings per share 9,771,546 10,073,907

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Dec. 31, 2021
Investments Debt And Equity Securities [Abstract]
Summary of Amortized Cost, Gross Unrealized Gains and Losses, and Fair Value of Investment Securities Available for Sale	The amortized cost, gross unrealized gains and losses, and fair value of investment securities available for sale are summarized as follows (in thousands): December 31, 2021 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available for Sale Fannie Mae $ 23,492 $ 596 $ (54 ) $ 24,034 Freddie Mac 19,387 373 (33 ) 19,727 Governmental National Mortgage Association 5,442 72 (17 ) 5,497 Total mortgage-backed securities 48,321 1,041 (104 ) 49,258 Obligations of states and political subdivisions 12,821 376 — 13,197 U.S. government treasury securities 30,000 — — 30,000 Corporate obligations 68,959 948 (884 ) 69,023 Other debt securities 10,637 150 (111 ) 10,676 Total $ 170,738 $ 2,515 $ (1,099 ) $ 172,154 Held to Maturity Fannie Mae $ 31,364 $ 5 $ (241 ) $ 31,128 Freddie Mac 21,948 — (179 ) 21,769 Total mortgage-backed securities $ 53,312 $ 5 $ (420 ) $ 52,897 U.S. government agency securities 2,435 13 — 2,448 Total mortgage-backed securities $ 55,747 $ 18 $ (420 ) $ 55,345 September 30, 2021 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available for Sale Fannie Mae $ 25,614 $ 766 $ (30 ) $ 26,350 Freddie Mac 21,240 574 (42 ) 21,772 Governmental National Mortgage Association 6,801 159 (14 ) 6,946 Total mortgage-backed securities 53,655 1,499 (86 ) 55,068 Obligations of states and political subdivisions 12,826 420 — 13,246 U.S. government agency securities 99,997 — — 99,997 U.S. government treasury securities 1,998 4 — 2,002 Corporate obligations 58,130 940 (453 ) 58,617 Other debt securities 11,493 273 (115 ) 11,651 Total $ 238,099 $ 3,136 $ (654 ) $ 240,581 Held to Maturity Fannie Mae 11,738 — (111 ) 11,627 Freddie Mac 9,745 — (123 ) 9,622 Total debt securities $ 21,483 $ — $ (234 ) $ 21,249
Summary of Unrealized and Realized Gains Losses Recognized in Net Income on Equity Securities	The following is a summary of unrealized and realized gains and losses recognized in net income on equity securities during the three months ended December 31, 2021 and 2020. (in thousands) Three Months Ended December 31, 2021 Three Months Ended December 31, 2020 Net gains recognized during the period on equity securities $ 1 $ 7 Less: Net gains recognized during the period on equity securities sold during the period — — Unrealized gains recognized during the reporting period on equity securities still held at the reporting date $ 1 $ 7
Schedule of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity	The amortized cost and fair value of debt securities at December 31, 2021, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties (in thousands): Available For Sale Held to Maturity Amortized Cost Fair Value Amortized Cost Fair Value Due in one year or less $ 31,770 $ 31,772 $ — $ — Due after one year through five years 21,319 21,758 — — Due after five years through ten years 68,373 68,578 8,875 8,808 Due after ten years 49,276 50,046 46,872 46,537 Total $ 170,738 $ 172,154 $ 55,747 $ 55,345
Schedule of Gross Unrealized Losses and Fair Value	The following tables show the Company’s gross unrealized losses and fair value, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position (dollars in thousands): December 31, 2021 Number of Securities Less than Twelve Months Twelve Months or Greater Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fannie Mae 24 $ 30,474 $ (278 ) $ 3,705 $ (17 ) $ 34,179 $ (295 ) Freddie Mac 19 26,525 (212 ) — — 26,525 (212 ) Governmental National Mortgage Association 8 954 (4 ) 1,803 (13 ) 2,757 (17 ) Corporate obligations 38 31,331 (821 ) 1,931 (63 ) 33,262 (884 ) Other debt securities 9 1 — 2,259 (111 ) 2,260 (111 ) Total 98 $ 89,285 $ (1,315 ) $ 9,698 $ (204 ) $ 98,983 $ (1,519 ) September 30, 2021 Less than Twelve Months Twelve Months or Greater Total Number of Securities Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fannie Mae 17 $ 15,410 $ (127 ) $ 4,078 $ (14 ) $ 19,488 $ (141 ) Freddie Mac 12 14,466 (165 ) — — 14,466 (165 ) Governmental National Mortgage Association 4 — — 2,038 (14 ) 2,038 (14 ) Corporate obligations 28 22,799 (397 ) 1,937 (56 ) 24,736 (453 ) Other debt securities 8 — — 2,348 (115 ) 2,348 (115 ) Total 69 $ 52,675 $ (689 ) $ 10,401 $ (199 ) $ 63,076 $ (888 )

Loans Receivable, Net and All_2

Loans Receivable, Net and Allowance for Loan Losses (Tables)	3 Months Ended
	Dec. 31, 2021
Receivables [Abstract]
Summary of Loans Receivable	Loans receivable consist of the following (in thousands): December 31, 2021 September 30, 2021 Real estate loans: Residential $ 580,292 $ 580,313 Construction 18,003 14,013 Commercial 615,608 591,117 Commercial 56,548 63,500 Obligations of states and political subdivisions 37,804 56,164 Home equity loans and lines of credit 37,384 38,426 Auto loans 10,339 13,852 Other 1,533 1,581 1,357,511 1,358,966 Less allowance for loan losses 18,210 18,113 Net loans $ 1,339,301 $ 1,340,853
Summary of Additional Information Regarding Loans Acquired and Accounted	The following table presents additional information regarding loans acquired and accounted for in accordance with ASC 310-30 (in thousands): December 31, 2021 September 30, 2021 Acquired Loans with Specific Evidence or Deterioration in Credit Quality (ASC 310-30) Acquired Loans with Specific Evidence or Deterioration in Credit Quality (ASC 310-30) Outstanding balance $ 695 $ 939 Carrying amount $ 646 $ 877
Schedule of Loans Evaluated for Impairment	The following tables show the amount of loans in each category that were individually and collectively evaluated for impairment at the dates indicated (in thousands): Total Loans Individually Evaluated for Impairment Loans Acquired with Deteriorated Credit Quality Collectively Evaluated for Impairment December 31, 2021 Real estate loans: Residential $ 580,292 $ 2,225 $ - $ 578,067 Construction 18,003 - - 18,003 Commercial 615,608 11,024 646 603,938 Commercial 56,548 1,247 - 55,301 Obligations of states and political subdivisions 37,804 - - 37,804 Home equity loans and lines of credit 37,384 297 - 37,087 Auto loans 10,339 44 - 10,295 Other 1,533 8 - 1,525 Total $ 1,357,511 $ 14,845 $ 646 $ 1,342,020 Total Loans Individually Evaluated for Impairment Loans Acquired with Deteriorated Credit Quality Collectively Evaluated for Impairment September 30, 2021 Real estate loans: Residential $ 580,313 $ 2,646 $ - $ 577,667 Construction 14,013 - - 14,013 Commercial 591,117 11,166 877 579,074 Commercial 63,500 1,355 - 62,145 Obligations of states and political sub divisions 56,164 - - 56,164 Home equity loans and lines of credit 38,426 336 - 38,090 Auto loans 13,852 39 - 13,813 Other 1,581 8 - 1,573 Total $ 1,358,966 $ 15,550 $ 877 $ 1,342,539
Schedule of Investment and Unpaid Principal Balances for Impaired Loans	The following tables include the recorded investment and unpaid principal balances for impaired loans with the associated allowance amount at the dates indicated, if applicable (in thousands): Recorded Investment Unpaid Principal Balance Associated Allowance December 31, 2021 With no specific allowance recorded: Real estate loans Residential $ 2,088 $ 3,004 $ - Construction - - - Commercial 11,011 12,634 - Commercial - 23 - Obligations of states and political subdivisions - - - Home equity loans and lines of credit 297 333 - Auto loans 26 40 - Other 8 20 - Total 13,430 16,054 - With an allowance recorded: Real estate loans Residential 137 142 16 Construction - - - Commercial 13 19 13 Commercial 1,247 1,368 472 Obligations of states and political subdivisions - - - Home equity loans and lines of credit - - - Auto loans 18 18 3 Other - - - Total 1,415 1,547 504 Total: Real estate loans Residential 2,225 3,146 16 Construction - - - Commercial 11,024 12,653 13 Commercial 1,247 1,391 472 Obligations of states and political subdivisions - - - Home equity loans and lines of credit 297 333 - Auto loans 44 58 3 Other 8 20 - Total Impaired Loans $ 14,845 $ 17,601 $ 504 Recorded Investment Unpaid Principal Balance Associated Allowance September 30, 2021 With no specific allowance recorded: Real Estate Loans Residential $ 2,538 $ 3,610 $ - Construction - - - Commercial 11,152 13,030 - Commercial 165 176 - Obligations of states and political subdivisions - - - Home equity loans and lines of credit 336 368 - Auto Loans 39 60 - Other 8 21 - Total 14,238 17,265 - With an allowance recorded: Real Estate Loans Residential 108 112 17 Construction - - - Commercial 14 19 14 Commercial 1,190 1,298 397 Obligations of states and political subdivisions - - - Home equity loans and lines of credit - - - Auto Loans - - - Other - - - Total 1,312 1,429 428 Total: Real Estate Loans Residential 2,646 3,722 17 Construction - - - Commercial 11,166 13,049 14 Commercial 1,355 1,474 397 Obligations of states and political subdivisions - - - Home equity loans and lines of credit 336 368 - Auto Loans 39 60 - Other 8 21 - Total Impaired Loans $ 15,550 $ 18,694 $ 428 The following table represents the average recorded investments in the impaired loans and the related amount of interest recognized during the time within the period that the impaired loans were impaired (in thousands): For the Three Months Ended December 31, 2021 2020 2021 2020 Average Recorded Investment Average Recorded Investment Interest Income Recognized Interest Income Recognized With no specific allowance recorded: Real estate loans Residential $ 2,292 $ 1,436 $ 2 $ 1 Construction - - - - Commercial 11,049 11,131 - - Commercial 109 1,313 - - Obligations of states and political subdivisions - - - - Home equity loans and lines of credit 310 109 - - Auto loans 23 55 - - Other - 11 - - Total 13,783 14,055 2 1 With an allowance recorded: Real estate loans Residential 118 221 - - Construction - - - - Commercial 13 2,581 - - Commercial 1,173 37 - - Obligations of states and political subdivisions - - - - Home equity loans and lines of credit - - - - Auto loans 10 40 - - Other - - - - Total 1,314 2,879 - - Total: Real estate loans Residential 2,410 1,657 2 1 Construction - - - - Commercial 11,062 13,712 - - Commercial 1,282 1,350 - Obligations of states and political subdivisions - - - - Home equity loans and lines of credit 310 109 - - Auto loans 33 95 - - Other - 11 - - Total Impaired Loans $ 15,097 $ 16,934 $ 2 $ 1
Classes of the Loan Portfolio, Internal Risk Rating System	The following tables present the classes of the loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard, and Doubtful or Loss within the internal risk rating system at December 31, 2021 and September 30, 2021 (in thousands): Pass Special Mention Substandard Doubtful or Loss Total December 31, 2021 Commercial real estate loans $ 577,343 $ 12,686 $ 25,579 $ - $ 615,608 Commercial 52,540 2,114 1,894 - 56,548 Obligations of states and political subdivisions 37,804 - - - 37,804 Total $ 667,687 $ 14,800 $ 27,473 $ - $ 709,960 Pass Special Mention Substandard Doubtful or Loss Total September 30, 2021 Commercial real estate loans $ 549,360 $ 20,184 $ 21,573 $ - $ 591,117 Commercial 61,657 141 1,702 - 63,500 Obligations of states and political subdivisions 56,164 - - - 56,164 Total $ 667,181 $ 20,325 $ 23,275 $ - $ 710,781
Schedule of Performing or Nonperforming Loans	The following tables present the risk ratings in the consumer categories of performing and non-performing loans at December 31, 2021 and September 30, 2021 (in thousands): Performing Non- performing Total December 31, 2021 Real estate loans: Residential $ 578,016 $ 2,276 $ 580,292 Construction 18,003 - 18,003 Home equity loans and lines of credit 36,968 416 37,384 Auto loans 10,278 61 10,339 Other 1,521 12 1,533 Total $ 644,786 $ 2,765 $ 647,551 Performing Non- performing Total September 30, 2021 Real estate loans: Residential $ 577,448 $ 2,865 $ 580,313 Construction 14,013 - 14,013 Home equity loans and lines of credit 37,963 463 38,426 Auto loans 13,809 43 13,852 Other 1,567 14 1,581 Total $ 644,800 $ 3,385 $ 648,185
Classes of the Loan Portfolio Summarized by the Aging Categories	The following tables present the classes of the loan portfolio summarized by the aging categories of performing loans, purchased credit impaired loans and nonaccrual loans as of December 31, 2021 and September 30, 2021 (in thousands): 31-60 Days 61-89 Days 90 + Days Total Purchased Total Current Past Due Past Due Past Due Past Due Credit Impaired Loans December 31, 2021 Real estate loans: Residential $ 577,525 $ 1,021 $ 510 $ 1,236 $ 2,767 $ - $ 580,292 Construction 18,003 - - - - - 18,003 Commercial 608,498 202 - 6,262 6,464 646 615,608 Commercial 55,359 - 32 1,157 1,189 - 56,548 Obligations of states and political subdivisions 37,804 - - - - - 37,804 Home equity loans and lines of credit 37,174 41 49 120 210 - 37,384 Auto loans 10,145 183 11 - 194 - 10,339 Other 1,453 53 27 - 80 - 1,533 Total $ 1,345,961 $ 1,500 $ 629 $ 8,775 $ 10,904 $ 646 $ 1,357,511 31-60 Days 61-89 Days 90 + Days Total Purchased Total Current Past Due Past Due Past Due Past Due Credit Impaired Loans September 30, 2021 Real estate loans: Residential $ 576,960 $ 1,029 $ 580 $ 1,744 $ 3,353 $ - $ 580,313 Construction 14,013 - - - $ - - 14,013 Commercial 587,779 111 - 2,350 $ 2,461 877 591,117 Commercial 62,243 - - 1,257 $ 1,257 - 63,500 Obligations of states and political subdivisions 56,164 - - - $ - - 56,164 Home equity loans and lines of credit 38,223 44 - 159 $ 203 - 38,426 Auto loans 13,576 271 5 - $ 276 - 13,852 Other 1,513 59 - 9 $ 68 - 1,581 Total $ 1,350,471 $ 1,514 $ 585 $ 5,519 $ 7,618 $ 877 $ 1,358,966 Non-Accrual Loans December 31, 2021 September 30, 2021 Real estate loans: Residential $ 2,276 $ 2,865 Construction - - Commercial 14,909 11,124 Commercial 1,250 1,358 Obligations of states and political subdivisions - - Home equity loans and lines of credit 416 463 Auto loans 61 43 Other 12 14 Total $ 18,924 $ 15,867
Summary of Primary Segments of ALL	The following table summarizes changes in the primary segments of the ALL for the three months ended December 31, 2021 and 2020 (in thousands): Home Obligations of Equity States and Loans and Real Estate Loans Commercial Political Lines of Other Residential Construction Commercial Loans Subdivisions Credit Auto Loans Loans Unallocated Total ALL balance at September 30, 2021 $ 4,114 $ 187 $ 10,470 $ 1,041 $ 393 $ 318 $ 232 $ 21 $ 1,337 $ 18,113 Charge-offs (6 ) - - - - - (6 ) - - (12 ) Recoveries 72 - 1 - - 2 34 - - 109 Provision (82 ) 54 136 183 (128 ) (23 ) (64 ) - (76 ) - ALL balance at December 31, 2021 $ 4,098 $ 241 $ 10,607 $ 1,224 $ 265 $ 297 $ 196 $ 21 $ 1,261 $ 18,210 ALL balance at September 30, 2020 $ 4,301 $ 127 $ 7,209 $ 874 $ 555 $ 337 $ 780 $ 25 $ 1,192 $ 15,400 Charge-offs - - (76 ) (9 ) - (8 ) (155 ) (1 ) - (249 ) Recoveries - - 17 - - 1 72 - - 90 Provision 206 8 712 39 (47 ) 20 (77 ) (2 ) 41 900 ALL balance at December 31, 2020 $ 4,507 $ 135 $ 7,862 $ 904 $ 508 $ 350 $ 620 $ 22 $ 1,233 $ 16,141 During the three months ended December 31, 2021, the Company recorded provision expense for the construction real estate loans, commercial real estate loans and commercial loans segments, due to either increased loan balances, changes in the loan mix within the pool, and/or charge-off activity in those segments. Provision expense was also recorded for possible loan losses due to the economic slowdown caused by COVID-19 restrictions. Credit provisions were recorded for loan loss for the residential real estate loans, obligations of states and political subdivisions, home equity loans and lines of credit and auto loans segments due to either decreased loan balances, changes in the loan mix within the pool, and/or decreased charge-off activity in those segments. During the three months ended December 31, 2020, the Company recorded provision expense for the residential real estate loans, construction real estate loans, commercial real estate loans, commercial loans, construction loans and home equity loans and lines of credit segments, due to either increased loan balances, changes in the loan mix within the pool, and/or charge-off activity in those segments. Provision expense was also recorded for possible loan losses due to the economic slowdown caused by COVID-19 restrictions. Credit provisions were recorded for loan loss for the obligations of states and political subdivisions, auto loan and other loan segments due to either decreased loan balances, changes in the loan mix within the pool, and/or decreased charge-off activity in those segments. The Company is closely monitoring all customer credit positions, particularly loans requesting payment relief. Such loans, as of December 31, 2021, amounted to approximately 1.4% of total loans outstanding, including $18.8 million in commercial real estate loans and $369,000 in commercial loans. As the economic impact of the COVID-19 pandemic continues to evolve, our customers may experience decreased cash flows, which may correlate to an inability to make timely loan payments. This, in turn, may require increases in our allowance for loan losses and increases in the level of charge-offs in our loan portfolio. The following table summarizes the primary segments of the ALL, segregated into two categories, the amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment as of December 31, 2021 and September 30, 2021 (in thousands): Home Obligations of Equity States and Loans and Real Estate Loans Commercial Political Lines of Other Residential Construction Commercial Loans Subdivisions Credit Auto Loans Loans Unallocated Total Individually evaluated for impairment $ 16 $ - $ 13 $ 472 $ - $ - $ 3 $ - $ - $ 504 Collectively evaluated for impairment 4,082 241 10,594 752 265 297 193 21 1,261 17,706 ALL balance at December 31, 2021 $ 4,098 $ 241 $ 10,607 $ 1,224 $ 265 $ 297 $ 196 $ 21 $ 1,261 $ 18,210 Individually evaluated for impairment $ 17 $ - $ 14 $ 397 $ - $ - $ - $ - $ - $ 428 Collectively evaluated for impairment 4,097 187 10,456 644 393 318 232 21 1,337 17,685 ALL balance at September 30, 2021 $ 4,114 $ 187 $ 10,470 $ 1,041 $ 393 $ 318 $ 232 $ 21 $ 1,337 $ 18,113

Deposits (Tables)

Deposits (Tables)	3 Months Ended
	Dec. 31, 2021
Deposits Liabilities Disclosures [Abstract]
Schedule of Deposits by Major Classifications	Deposits consist of the following major classifications (in thousands): December 31, 2021 September 30, 2021 Non-interest bearing demand accounts $ 275,090 $ 257,747 Interest bearing demand accounts 508,228 551,168 Money market accounts 458,741 428,272 Savings and club accounts 193,022 189,004 Certificates of deposit 199,653 209,924 Total $ 1,634,734 $ 1,636,115

Net Periodic Benefit Cost-Def_2

Net Periodic Benefit Cost-Defined Benefit Plan (Tables)	3 Months Ended
	Dec. 31, 2021
Compensation And Retirement Disclosure [Abstract]
Summary of the Components of Net Periodic Benefit Cost	The following table comprises the components of net periodic benefit cost for the three month periods ended December 31, 2021 and 2020 (in thousands): For the Three Months Ended December 31, 2021 2020 Service Cost $ - $ - Interest Cost 125 113 Expected return on plan assets (333 ) (289 ) Partial settlement 138 - Amortization of net loss from earlier periods 1 55 Net periodic benefit income $ (69 ) $ (121 )

Equity Incentive Plan (Tables)

Equity Incentive Plan (Tables)	3 Months Ended
	Dec. 31, 2021
Postemployment Benefits [Abstract]
Schedule of Restricted Stock Option Activity	The following is a summary of the status of the Company’s restricted stock as of December 31, 2021, and changes therein during the three month period then ended: Number of Restricted Weighted- average Grant Date Fair Value Nonvested at September 30, 2021 42,116 $ 13.99 Granted 33,580 16.46 Vested (625 ) 15.39 Forfeited (5,451 ) 14.91 Nonvested at December 31, 2021 69,620 $ 15.10

Fair Value (Tables)

Fair Value (Tables)	3 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Schedule of Fair Value For Assets and Liabilities Required to be Measured and Reported at Fair Value on a Recurring Basis	The following tables provide the fair value for assets and liabilities required to be measured and reported at fair value on a recurring basis on the Consolidated Balance Sheet as of December 31, 2021 and September 30, 2021 by level within the fair value hierarchy (in thousands). Recurring Fair Value Measurements at Reporting Date December 31, 2021 Assets Level I Level II Level III Total Investment securities available for sale: Mortgage backed securities $ - $ 49,258 $ - $ 49,258 Obligations of states and political subdivisions - 13,197 - 13,197 U.S. government treasury securities - 30,000 - 30,000 Corporate obligations - 58,086 10,937 69,023 Other debt securities - 10,676 - 10,676 Total debt securities $ - $ 161,217 $ 10,937 $ 172,154 Equity securities- financial services 33 - - 33 Derivatives and hedging activities - 5,030 - 5,030 Liabilities Derivatives and hedging activities - 1,875 - 1,875 September 30, 2021 Assets Level I Level II Level III Total Investment securities available for sale: Mortgage backed securities $ - $ 55,068 $ - $ 55,068 Obligations of states and political subdivisions - 13,246 - 13,246 U.S. government treasury securities - 99,997 - 99,997 U.S. government agencies - 2,002 - 2,002 Corporate obligations - 47,505 11,112 58,617 Other debt securities - 11,651 - 11,651 Total debt securities $ - $ 229,469 $ 11,112 $ 240,581 Equity securities-financial services 32 - - 32 Derivatives and hedging activities - 2,554 - 2,554 Liabilities: Derivatives and hedging activities - 1,755 - 1,755
Schedule of Changes in Fair Value of Level III Investments	The following table presents a summary of changes in the fair value of the Company’s Level III investments for the three month periods ended December 31, 2021 and 2020 (in thousands). Fair Value Measurement Using Significant Unobservable Inputs (Level III) Three Months Ended December 31, 2021 December 31, 2020 Beginning balance $ 11,112 $ 8,260 Purchases, sales, issuances, settlements, net - (3,000 ) Total unrealized (loss) gain: Included in earnings - - Included in other comprehensive (loss) income (175 ) 128 Transfers in and/or out of Level III - - $ 10,937 $ 5,388
Schedule of Fair Value For Assets Required to be Measured and Reported at Fair Value on a Nonrecurring Basis	The following tables provide the fair value for assets required to be measured and reported at fair value on a non recurring basis on the Consolidated Balance Sheet as of December 31, 2021 and September 30, 2021 by level within the fair value hierarchy: Non-Recurring Fair Value Measurements at Reporting Date (in thousands) December 31, 2021 Level I Level II Level III Total Foreclosed real estate $ - $ - $ 193 $ 193 Impaired loans - - 14,341 14,341 September 30, 2021 Level I Level II Level III Total Foreclosed real estate $ - $ - $ 461 $ 461 Impaired loans - - 15,122 15,122
Summary of Additional Quantitative Information about Assets Measured at Fair Value on a Nonrecurring Basis	The following tables present additional quantitative information about assets measured at fair value on a nonrecurring basis and for which the Company has utilized Level 3 inputs to determine fair value: Quantitative Information about Level 3 Fair Value Measurements (dollars in thousands) Fair Value Estimate Valuation Techniques Unobservable Input Range December 31, 2021 Impaired loans $ 14,341 Appraisal of collateral (1) Appraisal adjustments (2) 0% to 50% (24.8%) Foreclosed real estate owned 193 Appraisal of collateral (1) Appraisal adjustments (2) 20% to 35% (24.7%) Quantitative Information about Level 3 Fair Value Measurements (dollars in thousands) Fair Value Estimate Valuation Techniques Unobservable Input Range September 30, 2021 Impaired loans $ 15,122 Appraisal of collateral (1) Appraisal adjustments (2) 0% to 50% (24.1%) Foreclosed real estate owned 461 Appraisal of collateral (1) Appraisal adjustments (2) 20% to 35% (20.1%) (1) Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various level 3 inputs which are not identifiable. (2) Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range of liquidation expenses and other appraisal adjustments are presented as a percent of the appraisal.
Schedule of Carrying Value and Fair Value for Certain Financial Instruments not Required to be Measured and Reported at Fair Value	The following tables provide the carrying value and fair value for certain financial instruments that are not required to be measured or reported at fair value on the consolidated Balance Sheet at December 31, 2021 and September 30, 2021 by level within the fair value hierarchy: December 31, 2021 (in thousands) Carrying Level I Level II Level III Total Fair Value Financial assets: Investment securities held to maturity $ 55,747 $ - $ - $ 53,089 $ 53,089 Loans receivable, net 1,339,301 - - 1,344,491 1,344,491 Mortgage servicing rights 833 - - 1,130 1,130 Financial liabilities: Deposits $ 1,634,734 $ 1,435,081 $ - $ 196,193 $ 1,631,274 September 30, 2021 (in thousands) Carrying Level I Level II Level III Total Fair Value Financial assets: Investment securities held to maturity $ 21,483 $ 21,249 $ 21,249 Loans receivable, net 1,340,853 - - 1,353,420 1,353,420 Mortgage servicing rights 763 - - 998 998 Financial liabilities: Deposits $ 1,636,115 $ 1,426,191 $ - $ 209,660 $ 1,635,851

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Summary of Activity in Accumulated Other Comprehensive Income (Loss)	The activity in accumulated other comprehensive income (loss) for the three month periods ended December 31, 2021 and 2020 is as follows (in thousands): Accumulated Other Comprehensive Income/(Loss) Defined Benefit Pension Plan Unrealized (Losses) on Securities Available for Sale Derivatives Total Balance at September 30, 2021 $ (1,907 ) $ 1,962 $ 627 $ 682 Other comprehensive income (loss) before reclassifications 763 (843 ) 1,690 1,610 Amounts reclassified from accumulated other comprehensive income (loss) 110 - 187 297 Period change 873 (843 ) 1,877 1,907 Balance at December 31, 2021 $ (1,034 ) $ 1,119 $ 2,504 $ 2,589 Balance at September 30, 2020 $ (3,432 ) $ 3,167 $ (3,791 ) $ (4,056 ) Other comprehensive income (loss) before reclassifications - (178 ) 410 232 Amounts reclassified from accumulated other comprehensive income (loss) - - 527 527 Period change - (178 ) 937 759 Balance at December 31, 2020 $ (3,432 ) $ 2,989 $ (2,854 ) $ (3,297 )
Summary of Reclassification Out of Accumulated Other Comprehensive Income (Loss)	The following table presents significant amounts reclassified out of each component of accumulated other comprehensive income (loss) for the three month periods ended December 31, 2021 and 2020 (in thousands): Amount Reclassified from Accumulated Other Comprehensive Income (Loss) Details About Accumulated Other Comprehensive Income (Loss) Components Accumulated Other Comprehensive Income (Loss) for the Three Months Ended December 31, Affected Line Item in the Consolidated Statement of Operations 2021 2020 Securities available for sale Net securities gains reclassified into earnings $ - $ - Gain on sale of investment securities available for sale, net Related income tax expense - - Income taxes Net effect on accumulated other comprehensive income (loss) for the period - - Defined benefit pension plan Amortization of net gain and prior service costs (139 ) - Compensation and employee benefits Related income tax expense 29 - Income taxes Net effect on accumulated other comprehensive income (loss) for the period (110 ) - Derivatives and hedging activities: Interest expense, effective portion (236 ) (667 ) Interest expense Related income tax expense 49 140 Income taxes Net effect on accumulated other comprehensive income (loss) for the period (187 ) (527 ) Total reclassification for the period $ (297 ) $ (527 )

Derivatives and Hedging Activit

Derivatives and Hedging Activities (Tables)	3 Months Ended
	Dec. 31, 2021
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Schedule of Fair Value of Derivative Financial Instruments as well as their Classification on Consolidated Balance Sheet	The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the Consolidated Balance Sheet as of December 31, 2021 and September 30, 2021 (in thousands). Fair Values of Derivative Instruments Asset Derivatives As of December 31, 2021 As of September 30, 2021 Hedged Item Notional Amount Balance Sheet Location Fair Value Notional Amount Balance Sheet Location Fair Value Brokered Deposits $ 200,000 Other Assets $ 3,298 $ 175,000 Other Assets $ 1,247 Commercial Loans 77,336 Other Assets 1,732 71,326 Other Assets 1,307 Total $ 277,336 $ 5,030 $ 246,326 $ 2,554 Fair Values of Derivative Instruments Liability Derivatives As of December 31, 2021 As of September 30, 2021 Hedged Item Notional Amount Balance Sheet Location Fair Value Notional Amount Balance Sheet Location Fair Value Brokered Deposits $ 25,000 Other Liabilities $ 129 $ 60,000 Other Liabilities $ 452 Commercial Loans 109,791 Other Liabilities 1,746 103,831 Other Liabilities 1,303 Total $ 134,791 $ 1,875 $ 163,831 $ 1,755
Schedule of Effect of Fair Value and Cash Flow Hedge Accounting on Accumulated Other Comprehensive Income (Loss)	The table below presents the effect of the Company’s cash flow hedge accounting on Accumulated Other Comprehensive Income (Loss) for the three month periods ended December 31, 2021 and 2020 (in thousands). The Effect of Fair Value and Cash Flow Hedge Accounting on Accumulated Other Comprehensive Income (Loss) Derivatives in Hedging Relationships Loss Recognized in OCI on Derivative (Effective Portion) Three Months Ended December 31, Location of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) Loss Recognized in OCI on Derivative (Effective Portion) Three Months Ended December 31, Derivatives in Cash Flow Hedging Relationships 2021 2020 2021 2020 Interest Rate Products $ 2,375 $ 1,181 Interest expense $ (236 ) $ (667 ) Total $ 2,375 $ 1,181 $ (236 ) $ (667 )

Leases (Tables)

Leases (Tables)	3 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Summary of Balance Sheet Operating Lease Right-of-Use Assets and Lease Liabilities	The following table presents the Consolidated Balance Sheet classification of the Company’s ROU assets and lease liabilities. The Company elected not to include short-term leases (i.e., leases with initial terms of twelve months or less), or equipment leases (deemed immaterial) on the Consolidated Balance sheet. (in thousands) December 31, 2021 Lease Right-of-Use Assets Classification Operating lease right-of-use assets Other assets $ 6,698 Total Lease Right-Of-Use Assets $ 6,698 (in thousands) December 31, 2021 Lease Liabilities Classification Operating lease Liabilities Other liabilities $ 6,864 Total Lease Liabilities $ 6,864 (in thousands) September 30, 2021 Lease Right-of-Use Assets Classification Operating lease right-of-use assets Other assets $ 6,222 Total Lease Right-Of-Use Assets $ 6,222 (in thousands) September 30, 2021 Lease Liabilities Classification Operating lease Liabilities Other liabilities $ 6,370 Total Lease Liabilities $ 6,370
Summary of Lease Term and Discount Rate	The calculated amount of the ROU assets and lease liabilities in the table above are impacted by the length of the lease term and the discount rate used to present value the minimum lease payments. The Company’s lease agreements often include one or more options to renew at the Company’s discretion. If at lease inception, the Company considers the exercising of a renewal option to be reasonably certain, the Company will include the extended term in the calculation of the ROU asset and lease liability. Regarding the discount rate, Topic 842 requires the use of the rate implicit in the lease whenever this rate is readily determinable. As this rate is rarely determinable, the Company utilizes its incremental borrowing rate at lease inception, on a collateralized basis, over a similar term. For operating leases existing prior to October 1, 2019, the rate for the remaining lease term as of October 1, 2019 was used. December 31, 2021 Weighted average remaining lease term Operating leases 12.4 years Weighted average discount rate Operating leases 2.34 %
Summary of Components of Lease Cost	The following table represents lease costs and other lease information. As the Company elected, for all classes of underlying assets, not to separate lease and non-lease components and instead to account for them as a single lease component, the variable lease cost primarily represents variable payments such as common area maintenance and utilities. Lease Costs (in thousands) Three Months Ended December 31, 2021 Operating lease cost $ 261 Variable lease cost 79 Net lease cost $ 340 Lease Costs (in thousands) Three Months Ended December 31, 2020 Operating lease cost $ 263 Variable lease cost 64 Net lease cost $ 327
Summary of Future Minimum Lease Payments	Future minimum payments for operating leases with initial or remaining terms of one year or more as of December 31, 2021 were as follows: (in thousands) Operating leases Twelve months Ended: December 31, 2022 $ 871 December 31, 2023 1,310 December 31, 2024 622 December 31, 2025 510 December 31, 2026 472 Thereafter 4,618 Total future minimum lease payments 8,403 Amounts representing interest 1,539 Present Value of Net Future Minimum Lease Payments $ 6,864

Nature of Operations and Basi_2

Nature of Operations and Basis of Presentation - Additional Information (Detail)	Dec. 31, 2021
ESSA Advisory Services, LLC [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage ownership of wholly owned subsidiary	100.00%

Earnings Per Share - Compositio

Earnings Per Share - Composition of the Weighted-Average Common Shares (Denominator) Used in the Basic and Diluted Earnings per Share Computation (Detail) - shares	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Weighted-average common shares outstanding	18,133,095	18,133,095
Average treasury stock shares	(7,643,827)	(7,279,981)
Average unearned ESOP shares	(673,259)	(718,523)
Average unearned non-vested shares	(56,760)	(63,504)
Weighted average common shares and common stock equivalents used to calculate basic earnings per share	9,759,249	10,071,087
Additional common stock equivalents (nonvested stock) used to calculate diluted earnings per share	12,297	2,820
Weighted average common shares and common stock equivalents used to calculate diluted earnings per share	9,771,546	10,073,907

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - Stock Option [Member] - $ / shares	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities	13,883	32,107
Average weighted price per share of anti-dilutive shares	$ 16.17	$ 16.13

Accounting Pronouncements - Add

Accounting Pronouncements - Additional Information (Details)	Dec. 31, 2021
ASU 2018-14 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Change in accounting principle, accounting standards update, adopted	true
Change in accounting principle, accounting standards update, immaterial effect	true
ASU 2020-04 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Change in accounting principle, accounting standards update, adopted	true
Change in accounting principle, accounting standards update, immaterial effect	true
ASU 2020-08 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Change in accounting principle, accounting standards update, adopted	true
Change in accounting principle, accounting standards update, immaterial effect	true
ASU 2021-01 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Change in accounting principle, accounting standards update, adopted	true
Change in accounting principle, accounting standards update, immaterial effect	true

Investment Securities - Summary

Investment Securities - Summary of Amortized Cost, Gross Unrealized Gains and Losses, and Fair Value of Investment Securities Available for Sale (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost	$ 170,738	$ 238,099
Available for sale, Gross Unrealized Gains	2,515	3,136
Available for sale, Gross Unrealized Losses	(1,099)	(654)
Available for sale, Fair Value	172,154	240,581
Held to maturity, Amortized Cost	55,747	21,483
Held to maturity, Gross Unrealized Gains	18
Held to maturity, Gross Unrealized Losses	(420)	(234)
Held to maturity, Fair Value	55,345	21,249
Fannie Mae [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost	23,492	25,614
Available for sale, Gross Unrealized Gains	596	766
Available for sale, Gross Unrealized Losses	(54)	(30)
Available for sale, Fair Value	24,034	26,350
Held to maturity, Amortized Cost	31,364	11,738
Held to maturity, Gross Unrealized Gains	5
Held to maturity, Gross Unrealized Losses	(241)	(111)
Held to maturity, Fair Value	31,128	11,627
Freddie Mac [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost	19,387	21,240
Available for sale, Gross Unrealized Gains	373	574
Available for sale, Gross Unrealized Losses	(33)	(42)
Available for sale, Fair Value	19,727	21,772
Held to maturity, Amortized Cost	21,948	9,745
Held to maturity, Gross Unrealized Losses	(179)	(123)
Held to maturity, Fair Value	21,769	9,622
Governmental National Mortgage Association [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost	5,442	6,801
Available for sale, Gross Unrealized Gains	72	159
Available for sale, Gross Unrealized Losses	(17)	(14)
Available for sale, Fair Value	5,497	6,946
Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost	48,321	53,655
Available for sale, Gross Unrealized Gains	1,041	1,499
Available for sale, Gross Unrealized Losses	(104)	(86)
Available for sale, Fair Value	49,258	55,068
Held to maturity, Amortized Cost	53,312
Held to maturity, Gross Unrealized Gains	5
Held to maturity, Gross Unrealized Losses	(420)
Held to maturity, Fair Value	52,897
Obligations of States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost	12,821	12,826
Available for sale, Gross Unrealized Gains	376	420
Available for sale, Fair Value	13,197	13,246
U.S. Government Treasury Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost	30,000	1,998
Available for sale, Gross Unrealized Gains		4
Available for sale, Fair Value	30,000	2,002
U.S. Government Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost		99,997
Available for sale, Fair Value		99,997
Held to maturity, Amortized Cost	2,435
Held to maturity, Gross Unrealized Gains	13
Held to maturity, Fair Value	2,448
Corporate Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost	68,959	58,130
Available for sale, Gross Unrealized Gains	948	940
Available for sale, Gross Unrealized Losses	(884)	(453)
Available for sale, Fair Value	69,023	58,617
Other Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost	10,637	11,493
Available for sale, Gross Unrealized Gains	150	273
Available for sale, Gross Unrealized Losses	(111)	(115)
Available for sale, Fair Value	$ 10,676	$ 11,651

Investment Securities - Summa_2

Investment Securities - Summary of Unrealized and Realized Gains Losses Recognized in Net Income on Equity Securities (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Investments Debt And Equity Securities [Abstract]
Net gains recognized during the period on equity securities	$ 1	$ 7
Unrealized gains recognized during the reporting period on equity securities still held at the reporting date	$ 1	$ 7

Investment Securities - Schedul

Investment Securities - Schedule of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Due in one year or less, Amortized Cost	$ 31,770
Due after one year through five years, Amortized Cost	21,319
Due after five years through ten years, Amortized Cost	68,373
Due after ten years, Amortized Cost	49,276
Available for sale, Amortized Cost	170,738	$ 238,099
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due in one year or less, Fair Value	31,772
Due after one year through five years, Fair Value	21,758
Due after five years through ten years, Fair Value	68,578
Due after ten years, Fair Value	50,046
Total, Fair Value	172,154	$ 240,581
Held to maturity Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Due after five years through ten years, Amortized Cost	8,875
Due after ten years, Amortized Cost	46,872
Total, Amortized Cost	55,747
Held to maturity Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due after five years through ten years, Fair Value	8,808
Due after ten years, Fair Value	46,537
Total, Fair Value	$ 55,345

Investment Securities - Additio

Investment Securities - Additional Information (Detail) - USD ($)	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Amortized Cost And Fair Value Debt Securities [Abstract]
Realized gross gains	$ 0	$ 0
Realized gross losses	$ 0	$ 0

Investment Securities - Sched_2

Investment Securities - Schedule of Gross Unrealized Losses and Fair Value (Detail) $ in Thousands	Dec. 31, 2021USD ($)Security	Sep. 30, 2021USD ($)Security
Schedule of Available-for-sale Securities [Line Items]
Number of Securities, Debt | Security	98	69
Fair Value, Less than Twelve Months, Debt	$ 89,285	$ 52,675
Gross Unrealized Losses, Less than Twelve Months, Debt	(1,315)	(689)
Fair Value, Twelve Months or Greater, Debt	9,698	10,401
Gross Unrealized Losses, Twelve Months or Greater, Debt	(204)	(199)
Fair Value Total, Debt	98,983	63,076
Gross Unrealized Losses Total, Debt	$ (1,519)	$ (888)
Fannie Mae [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of Securities, Debt | Security	24	17
Fair Value, Less than Twelve Months, Debt	$ 30,474	$ 15,410
Gross Unrealized Losses, Less than Twelve Months, Debt	(278)	(127)
Fair Value, Twelve Months or Greater, Debt	3,705	4,078
Gross Unrealized Losses, Twelve Months or Greater, Debt	(17)	(14)
Fair Value Total, Debt	34,179	19,488
Gross Unrealized Losses Total, Debt	$ (295)	$ (141)
Freddie Mac [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of Securities, Debt | Security	19	12
Fair Value, Less than Twelve Months, Debt	$ 26,525	$ 14,466
Gross Unrealized Losses, Less than Twelve Months, Debt	(212)	(165)
Fair Value Total, Debt	26,525	14,466
Gross Unrealized Losses Total, Debt	$ (212)	$ (165)
Governmental National Mortgage Association [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of Securities, Debt | Security	8	4
Fair Value, Less than Twelve Months, Debt	$ 954
Gross Unrealized Losses, Less than Twelve Months, Debt	(4)
Fair Value, Twelve Months or Greater, Debt	1,803	$ 2,038
Gross Unrealized Losses, Twelve Months or Greater, Debt	(13)	(14)
Fair Value Total, Debt	2,757	2,038
Gross Unrealized Losses Total, Debt	$ (17)	$ (14)
Corporate Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of Securities, Debt | Security	38	28
Fair Value, Less than Twelve Months, Debt	$ 31,331	$ 22,799
Gross Unrealized Losses, Less than Twelve Months, Debt	(821)	(397)
Fair Value, Twelve Months or Greater, Debt	1,931	1,937
Gross Unrealized Losses, Twelve Months or Greater, Debt	(63)	(56)
Fair Value Total, Debt	33,262	24,736
Gross Unrealized Losses Total, Debt	$ (884)	$ (453)
Other Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of Securities, Debt | Security	9	8
Fair Value, Less than Twelve Months, Debt	$ 1
Fair Value, Twelve Months or Greater, Debt	2,259	$ 2,348
Gross Unrealized Losses, Twelve Months or Greater, Debt	(111)	(115)
Fair Value Total, Debt	2,260	2,348
Gross Unrealized Losses Total, Debt	$ (111)	$ (115)

Loans Receivable, Net and All_3

Loans Receivable, Net and Allowance for Loan Losses - Summary of Loans Receivable (Detail) - USD ($)	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Real estate loans:
Total Loans	$ 1,357,511,000	$ 1,358,966,000
Less allowance for loan losses	18,210,000	18,113,000	$ 16,141,000	$ 15,400,000
Net loans	1,339,301,000	1,340,853,000
Obligations of States and Political Subdivisions [Member]
Real estate loans:
Total Loans	37,804,000	56,164,000
Less allowance for loan losses	265,000	393,000	508,000	555,000
Home Equity Loans and Lines of Credit [Member]
Real estate loans:
Total Loans	37,384,000	38,426,000
Less allowance for loan losses	297,000	318,000	350,000	337,000
Auto Loans [Member]
Real estate loans:
Total Loans	10,339,000	13,852,000
Less allowance for loan losses	196,000	232,000	620,000	780,000
Other [Member]
Real estate loans:
Total Loans	1,533,000	1,581,000
Less allowance for loan losses	21,000	21,000	22,000	25,000
Residential [Member] | Real Estate Loans [Member]
Real estate loans:
Total Loans	580,292,000	580,313,000
Less allowance for loan losses	4,098,000	4,114,000	4,507,000	4,301,000
Construction [Member] | Real Estate Loans [Member]
Real estate loans:
Total Loans	18,003,000	14,013,000
Less allowance for loan losses	241,000	187,000	135,000	127,000
Commercial [Member]
Real estate loans:
Net loans	18,800,000
Commercial [Member] | Real Estate Loans [Member]
Real estate loans:
Total Loans	615,608,000	591,117,000
Less allowance for loan losses	10,607,000	10,470,000	7,862,000	7,209,000
Commercial Loans [Member]
Real estate loans:
Total Loans	56,548,000	63,500,000
Less allowance for loan losses	1,224,000	$ 1,041,000	$ 904,000	$ 874,000
Net loans	$ 369,000

Loans Receivable, Net and All_4

Loans Receivable, Net and Allowance for Loan Losses - Additional Information (Detail)	3 Months Ended		12 Months Ended
	Dec. 31, 2021USD ($)LoanContractCustomer	Dec. 31, 2020Contract	Sep. 30, 2021USD ($)Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Criteria in internal rating system	Ten-point
Categories considered as not criticized	six
Days past due over which loans are considered as substandard	90 days
Minimum internal review amount	$ 750,000
Minimum external review amount	$ 1,000,000
Payment relief loan reported as percentage of loans outstanding	1.40%
Loan, total	$ 1,339,301,000		$ 1,340,853,000
Number of Contracts | Contract	0	0
Number of troubled debt restructurings, loan modified, defaulted within one year of modification | Contract	0	0
Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan, total	$ 369,000
Commercial Loans [Member] | Payment Deferrals or Payments of Interest Only [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan, total	$ 19,200,000
Number of customers | Customer	8
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan, total	$ 18,800,000
Paycheck Protection Program [Member] | Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans | Loan	69		180
Loans originated	$ 13,200,000		$ 22,600,000
Guaranteed loans maturity period	two or five years
Paycheck Protection Program [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds from loans	$ 2,400,000

Loans Receivable, Net and All_5

Loans Receivable, Net and Allowance for Loan Losses - Summary of Additional Information Regarding Loans Acquired and Accounted (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying amount	$ 1,357,511	$ 1,358,966
Loans Acquired with Deteriorated Credit Quality [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	695	939
Carrying amount	$ 646	$ 877

Loans Receivable, Net and All_6

Loans Receivable, Net and Allowance for Loan Losses - Schedule of Loans Evaluated for Impairment (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 1,357,511	$ 1,358,966
Individually Evaluated for Impairment	14,845	15,550
Collectively Evaluated for Impairment	1,342,020	1,342,539
Loans Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	646	877
Obligations of States and Political Subdivisions [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	37,804	56,164
Collectively Evaluated for Impairment	37,804	56,164
Home Equity Loans and Lines of Credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	37,384	38,426
Individually Evaluated for Impairment	297	336
Collectively Evaluated for Impairment	37,087	38,090
Auto Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	10,339	13,852
Individually Evaluated for Impairment	44	39
Collectively Evaluated for Impairment	10,295	13,813
Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,533	1,581
Individually Evaluated for Impairment	8	8
Collectively Evaluated for Impairment	1,525	1,573
Residential [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	580,292	580,313
Individually Evaluated for Impairment	2,225	2,646
Collectively Evaluated for Impairment	578,067	577,667
Construction [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	18,003	14,013
Collectively Evaluated for Impairment	18,003	14,013
Commercial [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	615,608	591,117
Individually Evaluated for Impairment	11,024	11,166
Collectively Evaluated for Impairment	603,938	579,074
Commercial [Member] | Real Estate Loans [Member] | Loans Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	646	877
Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	56,548	63,500
Individually Evaluated for Impairment	1,247	1,355
Collectively Evaluated for Impairment	$ 55,301	$ 62,145

Loans Receivable, Net and All_7

Loans Receivable, Net and Allowance for Loan Losses - Schedule of Investment and Unpaid Principal Balances for Impaired Loans (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2021
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 14,845		$ 15,550
Unpaid Principal Balance	17,601		18,694
Associated Allowance	504		428
Average Recorded Investment	15,097	$ 16,934
Interest Income Recognized	2	1
With no Specific Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	13,430		14,238
Unpaid Principal Balance	16,054		17,265
Average Recorded Investment	13,783	14,055
Interest Income Recognized	2	1
With an Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,415		1,312
Unpaid Principal Balance	1,547		1,429
Associated Allowance	504		428
Average Recorded Investment	1,314	2,879
Home Equity Loans and Lines of Credit [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	297		336
Unpaid Principal Balance	333		368
Average Recorded Investment	310	109
Home Equity Loans and Lines of Credit [Member] | With no Specific Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	297		336
Unpaid Principal Balance	333		368
Average Recorded Investment	310	109
Auto Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	44		39
Unpaid Principal Balance	58		60
Associated Allowance	3
Average Recorded Investment	33	95
Auto Loans [Member] | With no Specific Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	26		39
Unpaid Principal Balance	40		60
Average Recorded Investment	23	55
Auto Loans [Member] | With an Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	18
Unpaid Principal Balance	18
Associated Allowance	3
Average Recorded Investment	10	40
Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	8		8
Unpaid Principal Balance	20		21
Average Recorded Investment		11
Other [Member] | With no Specific Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	8		8
Unpaid Principal Balance	20		21
Average Recorded Investment		11
Residential [Member] | Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	2,225		2,646
Unpaid Principal Balance	3,146		3,722
Associated Allowance	16		17
Average Recorded Investment	2,410	1,657
Interest Income Recognized	2	1
Residential [Member] | Real Estate Loans [Member] | With no Specific Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	2,088		2,538
Unpaid Principal Balance	3,004		3,610
Average Recorded Investment	2,292	1,436
Interest Income Recognized	2	1
Residential [Member] | Real Estate Loans [Member] | With an Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	137		108
Unpaid Principal Balance	142		112
Associated Allowance	16		17
Average Recorded Investment	118	221
Commercial [Member] | Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	11,024		11,166
Unpaid Principal Balance	12,653		13,049
Associated Allowance	13		14
Average Recorded Investment	11,062	13,712
Commercial [Member] | Real Estate Loans [Member] | With no Specific Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	11,011		11,152
Unpaid Principal Balance	12,634		13,030
Average Recorded Investment	11,049	11,131
Commercial [Member] | Real Estate Loans [Member] | With an Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	13		14
Unpaid Principal Balance	19		19
Associated Allowance	13		14
Average Recorded Investment	13	2,581
Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,247		1,355
Unpaid Principal Balance	1,391		1,474
Associated Allowance	472		397
Average Recorded Investment	1,282	1,350
Commercial Loans [Member] | With no Specific Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment			165
Unpaid Principal Balance	23		176
Average Recorded Investment	109	1,313
Commercial Loans [Member] | With an Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,247		1,190
Unpaid Principal Balance	1,368		1,298
Associated Allowance	472		$ 397
Average Recorded Investment	$ 1,173	$ 37

Loans Receivable, Net and All_8

Loans Receivable, Net and Allowance for Loan Losses - Classes of Loan Portfolio, Internal Risk Rating System (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loan, total	$ 1,339,301	$ 1,340,853
Commercial And Municipal Portfolio Segment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loan, total	709,960	710,781
Commercial And Municipal Portfolio Segment | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loan, total	615,608	591,117
Commercial And Municipal Portfolio Segment | Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loan, total	56,548	63,500
Commercial And Municipal Portfolio Segment | Obligations of States and Political Subdivisions [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loan, total	37,804	56,164
Commercial And Municipal Portfolio Segment | Pass [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loan, total	667,687	667,181
Commercial And Municipal Portfolio Segment | Pass [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loan, total	577,343	549,360
Commercial And Municipal Portfolio Segment | Pass [Member] | Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loan, total	52,540	61,657
Commercial And Municipal Portfolio Segment | Pass [Member] | Obligations of States and Political Subdivisions [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loan, total	37,804	56,164
Commercial And Municipal Portfolio Segment | Special Mention [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loan, total	14,800	20,325
Commercial And Municipal Portfolio Segment | Special Mention [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loan, total	12,686	20,184
Commercial And Municipal Portfolio Segment | Special Mention [Member] | Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loan, total	2,114	141
Commercial And Municipal Portfolio Segment | Substandard [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loan, total	27,473	23,275
Commercial And Municipal Portfolio Segment | Substandard [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loan, total	25,579	21,573
Commercial And Municipal Portfolio Segment | Substandard [Member] | Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loan, total	$ 1,894	$ 1,702

Loans Receivable, Net and All_9

Loans Receivable, Net and Allowance for Loan Losses - Schedule of Performing or Non-Performing Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Financing Receivable, Recorded Investment [Line Items]
Total	$ 1,339,301	$ 1,340,853
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	647,551	648,185
Home Equity Loans and Lines of Credit [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	37,384	38,426
Auto Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	10,339	13,852
Other [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,533	1,581
Performing [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	644,786	644,800
Performing [Member] | Home Equity Loans and Lines of Credit [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	36,968	37,963
Performing [Member] | Auto Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	10,278	13,809
Performing [Member] | Other [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,521	1,567
Non-performing [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	2,765	3,385
Non-performing [Member] | Home Equity Loans and Lines of Credit [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	416	463
Non-performing [Member] | Auto Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	61	43
Non-performing [Member] | Other [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	12	14
Residential [Member] | Real Estate Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	580,292	580,313
Residential [Member] | Performing [Member] | Real Estate Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	578,016	577,448
Residential [Member] | Non-performing [Member] | Real Estate Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	2,276	2,865
Construction [Member] | Real Estate Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	18,003	14,013
Construction [Member] | Performing [Member] | Real Estate Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	$ 18,003	$ 14,013

Loans Receivable, Net and Al_10

Loans Receivable, Net and Allowance for Loan Losses - Classes of Loan Portfolio Summarized by Aging Categories (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current, Accruing Loans	$ 1,345,961	$ 1,350,471
31-60 Days Past Due, Accruing Loans	1,500	1,514
61-90 Days Past Due, Accruing Loans	629	585
90+ Days Past Due	8,775	5,519
Total Past Due, Accruing Loans	10,904	7,618
Purchased Credit Impaired, Accruing Loans	646	877
Total Accruing Loans	1,357,511	1,358,966
Non-Accrual Loans	18,924	15,867
Obligations of States and Political Subdivisions [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current, Accruing Loans	37,804	56,164
Total Accruing Loans	37,804	56,164
Home Equity Loans and Lines of Credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current, Accruing Loans	37,174	38,223
31-60 Days Past Due, Accruing Loans	41	44
61-90 Days Past Due, Accruing Loans	49
90+ Days Past Due	120	159
Total Past Due, Accruing Loans	210	203
Total Accruing Loans	37,384	38,426
Non-Accrual Loans	416	463
Auto Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current, Accruing Loans	10,145	13,576
31-60 Days Past Due, Accruing Loans	183	271
61-90 Days Past Due, Accruing Loans	11	5
Total Past Due, Accruing Loans	194	276
Total Accruing Loans	10,339	13,852
Non-Accrual Loans	61	43
Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current, Accruing Loans	1,453	1,513
31-60 Days Past Due, Accruing Loans	53	59
61-90 Days Past Due, Accruing Loans	27
90+ Days Past Due		9
Total Past Due, Accruing Loans	80	68
Total Accruing Loans	1,533	1,581
Non-Accrual Loans	12	14
Residential [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current, Accruing Loans	577,525	576,960
31-60 Days Past Due, Accruing Loans	1,021	1,029
61-90 Days Past Due, Accruing Loans	510	580
90+ Days Past Due	1,236	1,744
Total Past Due, Accruing Loans	2,767	3,353
Total Accruing Loans	580,292	580,313
Non-Accrual Loans	2,276	2,865
Construction [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current, Accruing Loans	18,003	14,013
Total Accruing Loans	18,003	14,013
Commercial [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current, Accruing Loans	608,498	587,779
31-60 Days Past Due, Accruing Loans	202	111
90+ Days Past Due	6,262	2,350
Total Past Due, Accruing Loans	6,464	2,461
Purchased Credit Impaired, Accruing Loans	646	877
Total Accruing Loans	615,608	591,117
Non-Accrual Loans	14,909	11,124
Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current, Accruing Loans	55,359	62,243
61-90 Days Past Due, Accruing Loans	32
90+ Days Past Due	1,157	1,257
Total Past Due, Accruing Loans	1,189	1,257
Total Accruing Loans	56,548	63,500
Non-Accrual Loans	$ 1,250	$ 1,358

Loans Receivable, Net and Al_11

Loans Receivable, Net and Allowance for Loan Losses - Summary of Changes in Primary Segments of ALL (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2021
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of period	$ 18,113	$ 15,400
Charge-offs	(12)	(249)
Recoveries	109	90
Provision		900
Balance, End of period	18,210	16,141
Individually evaluated for impairment	504		$ 428
Collectively evaluated for impairment	17,706		17,685
Commercial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of period	1,041	874
Charge-offs		(9)
Provision	183	39
Balance, End of period	1,224	904
Individually evaluated for impairment	472		397
Collectively evaluated for impairment	752		644
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of period	1,337	1,192
Provision	(76)	41
Balance, End of period	1,261	1,233
Collectively evaluated for impairment	1,261		1,337
Real Estate Loans [Member] | Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of period	4,114	4,301
Charge-offs	(6)
Recoveries	72
Provision	(82)	206
Balance, End of period	4,098	4,507
Individually evaluated for impairment	16		17
Collectively evaluated for impairment	4,082		4,097
Real Estate Loans [Member] | Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of period	187	127
Provision	54	8
Balance, End of period	241	135
Collectively evaluated for impairment	241		187
Real Estate Loans [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of period	10,470	7,209
Charge-offs		(76)
Recoveries	1	17
Provision	136	712
Balance, End of period	10,607	7,862
Individually evaluated for impairment	13		14
Collectively evaluated for impairment	10,594		10,456
Obligations of States and Political Subdivisions [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of period	393	555
Provision	(128)	(47)
Balance, End of period	265	508
Collectively evaluated for impairment	265		393
Home Equity Loans and Lines of Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of period	318	337
Charge-offs		(8)
Recoveries	2	1
Provision	(23)	20
Balance, End of period	297	350
Collectively evaluated for impairment	297		318
Auto Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of period	232	780
Charge-offs	(6)	(155)
Recoveries	34	72
Provision	(64)	(77)
Balance, End of period	196	620
Individually evaluated for impairment	3
Collectively evaluated for impairment	193		232
Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of period	21	25
Charge-offs		(1)
Provision		(2)
Balance, End of period	21	$ 22
Collectively evaluated for impairment	$ 21		$ 21

Deposits - Schedule of Deposits

Deposits - Schedule of Deposits by Major Classifications (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Deposits Liabilities Disclosures [Abstract]
Non-interest bearing demand accounts	$ 275,090	$ 257,747
Interest bearing demand accounts	508,228	551,168
Money market accounts	458,741	428,272
Savings and club accounts	193,022	189,004
Certificates of deposit	199,653	209,924
Total	$ 1,634,734	$ 1,636,115

Net Periodic Benefit Cost-Def_3

Net Periodic Benefit Cost-Defined Benefit Plan - Summary of the Components of Net Periodic Benefit Cost (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Compensation Related Costs [Abstract]
Interest Cost	$ 125	$ 113
Expected return on plan assets	(333)	(289)
Partial settlement	138
Amortization of net loss from earlier periods	1	55
Net periodic benefit income	$ (69)	$ (121)

Equity Incentive Plan - Additio

Equity Incentive Plan - Additional Information (Detail) - USD ($)	Mar. 02, 2016	Dec. 31, 2021	Dec. 31, 2020
Compensation Related Costs Disclosure [Line Items]
Share-based compensation expense		$ 262,000	$ 232,000
2007 Equity Incentive Plan [Member]
Compensation Related Costs Disclosure [Line Items]
Common stock issuance, Grant	2,377,326
Further number of shares, grants	0
2016 Plan [Member]
Compensation Related Costs Disclosure [Line Items]
Common stock issuance, Grant		250,000
Stock Option [Member]
Compensation Related Costs Disclosure [Line Items]
Number of available shares	1,698,090
Restricted Stock [Member]
Compensation Related Costs Disclosure [Line Items]
Number of available shares	679,236
Share-based compensation expense		$ 262,000	$ 232,000
Expected future expense		$ 876,000
Remaining vesting periods		3 years 9 months
Restricted Stock [Member] | Minimum [Member]
Compensation Related Costs Disclosure [Line Items]
Restricted shares vesting period		9 months
Restricted Stock [Member] | Maximum [Member]
Compensation Related Costs Disclosure [Line Items]
Restricted shares vesting period		45 months

Equity Incentive Plan - Schedul

Equity Incentive Plan - Schedule of Restricted Stock Option Activity (Detail) - Restricted Stock [Member]	3 Months Ended
	Dec. 31, 2021$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Restricted Stock, Nonvested at September 30, 2021 | shares	42,116
Number of Restricted Stock, Granted | shares	33,580
Number of Restricted Stock, Vested | shares	(625)
Number of Restricted Stock, Forfeited | shares	(5,451)
Number of Restricted Stock, Nonvested at December 31, 2021 | shares	69,620
Weighted-average Grant Date Fair Value, Nonvested at September 30, 2021 | $ / shares	$ 13.99
Weighted-average Grant Date Fair Value, Granted | $ / shares	16.46
Weighted-average Grant Date Fair Value, Vested | $ / shares	15.39
Weighted-average Grant Date Fair Value, Forfeited | $ / shares	14.91
Weighted-average Grant Date Fair Value, Nonvested at December 31, 2021 | $ / shares	$ 15.10

Fair Value - Schedule of Fair V

Fair Value - Schedule of Fair Value For Assets and Liabilities Required to be Measured and Reported at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Assets
Total debt securities	$ 172,154	$ 240,581
Fair Value, Measurements, Recurring [Member]
Assets
Total debt securities	172,154	240,581
Equity securities- financial services	33	32
Derivatives and hedging activities	5,030	2,554
Liabilities
Derivatives and hedging activities	1,875	1,755
Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities [Member]
Assets
Total debt securities	49,258	55,068
Fair Value, Measurements, Recurring [Member] | Obligations of States and Political Subdivisions [Member]
Assets
Total debt securities	13,197	13,246
Fair Value, Measurements, Recurring [Member] | U.S. Government Treasury Securities [Member]
Assets
Total debt securities	30,000	99,997
Fair Value, Measurements, Recurring [Member] | Corporate Obligations [Member]
Assets
Total debt securities	69,023	58,617
Fair Value, Measurements, Recurring [Member] | Other Debt Securities [Member]
Assets
Total debt securities	10,676	11,651
Fair Value, Measurements, Recurring [Member] | U.S. Government Agency Securities [Member]
Assets
Total debt securities		2,002
Fair Value, Measurements, Recurring [Member] | Level I [Member]
Assets
Equity securities- financial services	33	32
Fair Value, Measurements, Recurring [Member] | Level II [Member]
Assets
Total debt securities	161,217	229,469
Derivatives and hedging activities	5,030	2,554
Liabilities
Derivatives and hedging activities	1,875	1,755
Fair Value, Measurements, Recurring [Member] | Level II [Member] | Mortgage-Backed Securities [Member]
Assets
Total debt securities	49,258	55,068
Fair Value, Measurements, Recurring [Member] | Level II [Member] | Obligations of States and Political Subdivisions [Member]
Assets
Total debt securities	13,197	13,246
Fair Value, Measurements, Recurring [Member] | Level II [Member] | U.S. Government Treasury Securities [Member]
Assets
Total debt securities	30,000	99,997
Fair Value, Measurements, Recurring [Member] | Level II [Member] | Corporate Obligations [Member]
Assets
Total debt securities	58,086	47,505
Fair Value, Measurements, Recurring [Member] | Level II [Member] | Other Debt Securities [Member]
Assets
Total debt securities	10,676	11,651
Fair Value, Measurements, Recurring [Member] | Level II [Member] | U.S. Government Agency Securities [Member]
Assets
Total debt securities		2,002
Fair Value, Measurements, Recurring [Member] | Level III [Member]
Assets
Total debt securities	10,937	11,112
Fair Value, Measurements, Recurring [Member] | Level III [Member] | Corporate Obligations [Member]
Assets
Total debt securities	$ 10,937	$ 11,112

Fair Value - Schedule of Change

Fair Value - Schedule of Changes in Fair Value of Level III Investments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Beginning balance	$ 11,112	$ 8,260
Purchases, sales, issuances, settlements, net		(3,000)
Total unrealized (loss) gain:
Included in other comprehensive (loss) income	(175)	128
Ending balance	$ 10,937	$ 5,388

Fair Value - Schedule of Fair_2

Fair Value - Schedule of Fair Value For Assets Required to be Measured and Reported at Fair Value on a Nonrecurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreclosed real estate	$ 193	$ 461
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreclosed real estate	193	461
Impaired loans	14,341	15,122
Level III [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreclosed real estate	193	461
Impaired loans	$ 14,341	$ 15,122

Fair Value - Summary of Additio

Fair Value - Summary of Additional Quantitative Information about Assets Measured at Fair Value on Nonrecurring Basis (Detail) - Fair Value, Measurements, Nonrecurring [Member] - Level III [Member] $ in Thousands	Dec. 31, 2021USD ($)	Sep. 30, 2021USD ($)
Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Estimate	$ 14,341	$ 15,122
Servicing Asset, Valuation Technique [Extensible Enumeration]	us-gaap:MarketApproachValuationTechniqueMember	us-gaap:MarketApproachValuationTechniqueMember
Servicing Asset, Measurement Input [Extensible Enumeration]	us-gaap:MeasurementInputAppraisedValueMember	us-gaap:MeasurementInputAppraisedValueMember
Fair value input appraisal adjustments	0.248	0.241
Impaired Loans [Member] | Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value input appraisal adjustments	0	0
Impaired Loans [Member] | Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value input appraisal adjustments	0.50	0.50
Foreclosed Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Estimate	$ 193	$ 461
Servicing Asset, Valuation Technique [Extensible Enumeration]	us-gaap:MarketApproachValuationTechniqueMember	us-gaap:MarketApproachValuationTechniqueMember
Servicing Asset, Measurement Input [Extensible Enumeration]	us-gaap:MeasurementInputAppraisedValueMember	us-gaap:MeasurementInputAppraisedValueMember
Fair value input appraisal adjustments	0.247	0.201
Foreclosed Real Estate Owned [Member] | Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value input appraisal adjustments	0.20	0.20
Foreclosed Real Estate Owned [Member] | Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value input appraisal adjustments	0.35	0.35

Fair Value - Additional Informa

Fair Value - Additional Information (Detail) $ in Thousands	Dec. 31, 2021USD ($)Loan	Sep. 30, 2021USD ($)Loan
Fair Value Disclosures [Abstract]
Number of impaired loans | Loan	74	76
Impaired loans, carrying value	$ 14,800	$ 15,600
Impaired loans, valuation allowance	504	428
Impaired loans, net fair value	$ 14,300	$ 15,100

Fair Value - Schedule of Carryi

Fair Value - Schedule of Carrying Value and Fair Value for Certain Financial Instruments not Required to be Measured and Reported at Fair Value (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Financial assets:
Investment securities held to maturity	$ 55,345	$ 21,249
Loans receivable, net	14,300	15,100
Carrying Value [Member]
Financial assets:
Investment securities held to maturity	55,747	21,483
Loans receivable, net	1,339,301	1,340,853
Mortgage servicing rights	833	763
Financial liabilities:
Deposits	1,634,734	1,636,115
Estimated Fair Value [Member]
Financial assets:
Investment securities held to maturity	53,089	21,249
Loans receivable, net	1,344,491	1,353,420
Mortgage servicing rights	1,130	998
Financial liabilities:
Deposits	1,631,274	1,635,851
Estimated Fair Value [Member] | Level 1 [Member]
Financial liabilities:
Deposits	1,435,081	1,426,191
Estimated Fair Value [Member] | Level 3 [Member]
Financial assets:
Investment securities held to maturity	53,089	21,249
Loans receivable, net	1,344,491	1,353,420
Mortgage servicing rights	1,130	998
Financial liabilities:
Deposits	$ 196,193	$ 209,660

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) - Summary of Activity in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ 201,822	$ 191,397
Ending Balance	207,619	194,153
Defined Benefit Pension Plan [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(1,907)	(3,432)
Other comprehensive income (loss) before reclassifications	763
Amounts reclassified from accumulated other comprehensive income (loss)	110
Total other comprehensive income (loss)	873
Ending Balance	(1,034)	(3,432)
Unrealized Gains (Losses) on Securities Available for Sale [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	1,962	3,167
Other comprehensive income (loss) before reclassifications	(843)	(178)
Total other comprehensive income (loss)	(843)	(178)
Ending Balance	1,119	2,989
Derivatives [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	627	(3,791)
Other comprehensive income (loss) before reclassifications	1,690	410
Amounts reclassified from accumulated other comprehensive income (loss)	187	527
Total other comprehensive income (loss)	1,877	937
Ending Balance	2,504	(2,854)
Accumulated Other Comprehensive Income/(Loss) [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	682	(4,056)
Other comprehensive income (loss) before reclassifications	1,610	232
Amounts reclassified from accumulated other comprehensive income (loss)	297	527
Total other comprehensive income (loss)	1,907	759
Ending Balance	$ 2,589	$ (3,297)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) - Summary of Reclassification Out of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Schedule of Available-for-sale Securities [Line Items]
Interest expense	$ (846)	$ (2,000)
Income taxes	(973)	(834)
NET INCOME	4,613	4,135
Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member]
Schedule of Available-for-sale Securities [Line Items]
NET INCOME	(297)	(527)
Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member] | Derivatives [Member]
Schedule of Available-for-sale Securities [Line Items]
Interest expense	(236)	(667)
Income taxes	49	140
NET INCOME	(187)	$ (527)
Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member] | Defined Benefit Pension Plan [Member]
Schedule of Available-for-sale Securities [Line Items]
Compensation and employee benefits	(139)
Income taxes	29
NET INCOME	$ (110)

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities - Schedule of Fair Value of Derivative Financial Instruments as well as their Classification on Consolidated Balance Sheet (Detail) - Designated as Hedging Instrument [Member] - USD ($)	Dec. 31, 2021	Sep. 30, 2021
Other Assets [Member]
Derivatives Fair Value [Line Items]
Derivatives, Notional Amount	$ 277,336,000	$ 246,326,000
Fair Values of Derivative Instruments, Asset	5,030,000	2,554,000
Other Liabilities [Member]
Derivatives Fair Value [Line Items]
Derivatives, Notional Amount	134,791,000	163,831,000
Fair Values of Derivative Instruments, Liability	1,875,000	1,755,000
Brokered Deposits [Member] | Other Assets [Member]
Derivatives Fair Value [Line Items]
Derivatives, Notional Amount	200,000,000	175,000,000
Fair Values of Derivative Instruments, Asset	3,298,000	1,247,000
Brokered Deposits [Member] | Other Liabilities [Member]
Derivatives Fair Value [Line Items]
Derivatives, Notional Amount	25,000,000	60,000,000
Fair Values of Derivative Instruments, Liability	129,000	452,000
Commercial Loans [Member] | Other Assets [Member]
Derivatives Fair Value [Line Items]
Derivatives, Notional Amount	77,336,000	71,326,000
Fair Values of Derivative Instruments, Asset	1,732,000	1,307,000
Commercial Loans [Member] | Other Liabilities [Member]
Derivatives Fair Value [Line Items]
Derivatives, Notional Amount	109,791,000	103,831,000
Fair Values of Derivative Instruments, Liability	$ 1,746,000	$ 1,303,000

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities - Additional Information (Detail)	3 Months Ended
	Dec. 31, 2021USD ($)Contract	Dec. 31, 2020USD ($)	Sep. 30, 2021USD ($)
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Interest expense	$ 846,000	$ 2,000,000
Derivative liability, collateral against obligations	0		$ 640,000
Designated as Hedging Instrument [Member] | Cash Flow Hedges of Interest Rate Risk [Member] | Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Interest expense	236,000	$ 667,000
Increase (decrease) in accrued interest payable	$ 20,000
Designated as Hedging Instrument [Member] | Cash Flow Hedges of Interest Rate Risk [Member] | Interest Rate Swaps [Member] | Brokered Certificates [Member] | Variable Rate [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative, number of instruments | Contract	10
Derivative, notional principal amount	$ 225,000,000
Designated as Hedging Instrument [Member] | Cash Flow Hedges of Interest Rate Risk [Member] | Interest Rate Swaps [Member] | Commercial Loans [Member] | Variable Rate [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative, notional principal amount	$ 187,100,000

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities - Schedule of Effect of Cash Flow Hedge Accounting on Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in OCI on Derivative	$ 2,139	$ 516
Designated as Hedging Instrument [Member] | Cash Flow Hedges of Interest Rate Risk [Member]
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in OCI on Derivative	2,375	1,181
Gain (Loss) Reclassified from Accumulated OCI into Income	(236)	(667)
Designated as Hedging Instrument [Member] | Interest Rate Products [Member] | Cash Flow Hedges of Interest Rate Risk [Member]
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in OCI on Derivative	2,375	1,181
Designated as Hedging Instrument [Member] | Interest Rate Products [Member] | Cash Flow Hedges of Interest Rate Risk [Member] | Interest Expense [Member]
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Reclassified from Accumulated OCI into Income	$ (236)	$ (667)

Contingent Liabilities - Additi

Contingent Liabilities - Additional Information (Detail) - Plaintiff	May 29, 2020	Dec. 09, 2019	Dec. 08, 2016
Commitments And Contingencies Disclosure [Abstract]
Number of plaintiffs	3		1
Additional number of plaintiffs		2

Leases - Additional Information

Leases - Additional Information (Detail)	3 Months Ended
	Dec. 31, 2021
Lease Cost [Abstract]
Lessee operating lease expiration year	2044

Leases - Summary of Balance She

Leases - Summary of Balance Sheet Operating Lease Right-of-Use Assets and Lease Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
ASSETS
Operating lease right-of-use assets	$ 6,698	$ 6,222
Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List	Other assets	Other assets
LIABILITIES
Operating lease Liabilities	$ 6,864	$ 6,370
Operating Lease Liability Statement Of Financial Position Extensible List	Other liabilities	Other liabilities

Leases - Summary of Lease Term

Leases - Summary of Lease Term and Discount Rate (Detail)	Dec. 31, 2021
Weighted average remaining lease term
Operating leases	12 years 4 months 24 days
Weighted average discount rate
Operating leases	2.34%

Leases - Summary of Components

Leases - Summary of Components of Lease Cost (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Lease Cost [Abstract]
Operating lease cost	$ 261	$ 263
Variable lease cost	79	64
Net lease cost	$ 340	$ 327

Leases - Summary of Future Mini

Leases - Summary of Future Minimum Lease Payments (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Lease Cost [Abstract]
December 31, 2022	$ 871
December 31, 2023	1,310
December 31, 2024	622
December 31, 2025	510
December 31, 2026	472
Thereafter	4,618
Total future minimum lease payments	8,403
Amounts representing interest	1,539
Present Value of Net Future Minimum Lease Payments	$ 6,864	$ 6,370