First Savings Financial (FSFG) 10-Q 10 May 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Mar. 31, 2019	Apr. 30, 2019
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Entity Registrant Name	First Savings Financial Group Inc
Entity Central Index Key	0001435508
Current Fiscal Year End Date	--09-30
Entity Filer Category	Accelerated Filer
Trading Symbol	FSFG
Entity Common Stock, Shares Outstanding		2,344,836
Entity Emerging Growth Company	false
Entity Small Business	true

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
ASSETS
Cash and due from banks	$ 11,617	$ 14,191
Interest-bearing deposits with banks	28,825	28,083
Total cash and cash equivalents	40,442	42,274
Interest-bearing time deposits	2,963	2,501
Securities available for sale, at fair value	191,082	184,373
Securities held to maturity	2,465	2,607
Loans held for sale, residential mortgage ($25,017 at fair value in 2019; $9,952 at fair value in 2018)	25,017	10,466
Loans held for sale, Small Business Administration	23,786	21,659
Loans, net of allowance for loan losses of $9,934 and $9,323	762,661	704,271
Federal Reserve Bank and Federal Home Loan Bank stock, at cost	10,196	9,621
Premises and equipment	18,488	13,013
Other real estate owned, held for sale	1,917	103
Accrued interest receivable:
Loans	2,882	2,687
Securities	1,720	1,600
Cash surrender value of life insurance	26,224	19,966
Goodwill	9,848	9,848
Core deposit intangibles	1,523	1,727
Other assets	8,508	7,690
Total Assets	1,129,722	1,034,406
Deposits:
Noninterest-bearing	162,901	167,705
Interest-bearing	661,869	643,407
Total deposits	824,770	811,112
Repurchase agreements	1,353	1,352
Borrowings from Federal Home Loan Bank	160,938	90,000
Other borrowings	19,695	19,661
Accrued interest payable	1,325	743
Advance payments by borrowers for taxes and insurance	1,274	1,218
Accrued expenses and other liabilities	10,438	10,075
Total Liabilities	1,019,793	934,161
STOCKHOLDERS' EQUITY
Preferred stock of $.01 par value per share; authorized 1,000,000 shares; none issued	0	0
Common stock of $.01 par value per share; authorized 20,000,000 shares; issued 2,565,606 shares (2,560,907 at September 30, 2018); outstanding 2,344,836 shares (2,292,021 shares at September 30, 2018)	26	26
Additional paid-in capital	27,500	27,630
Retained earnings - substantially restricted	82,266	76,523
Accumulated other comprehensive income	4,089	382
Unearned stock compensation	(534)	(479)
Less treasury stock, at cost - 220,770 shares (268,886 shares at September 30, 2018)	(4,659)	(5,269)
Total First Savings Financial Group, Inc. Stockholders' Equity	108,688	98,813
Noncontrolling interests in subsidiary	1,241	1,432
Total Equity	109,929	100,245
Total Liabilities and Equity	$ 1,129,722	$ 1,034,406

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Loans Held-for-sale, Fair Value Disclosure	$ 25,017	$ 9,952
Loans, net of allowance for loan losses	$ 9,934	$ 9,323
Preferred stock, par value	$ 0.01	$ 0.01
Preferred Stock, Authorized	1,000,000	1,000,000
Preferred Stock, issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, Authorized	20,000,000	20,000,000
Common stock, issued	2,565,606	2,560,907
Common Stock, Outstanding	2,344,836	2,292,021
Treasury stock, shares	220,770	268,886

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
INTEREST INCOME
Loans, including fees	$ 10,211	$ 8,173	$ 20,021	$ 15,860
Securities:
Taxable	727	809	1,474	1,586
Tax-exempt	1,006	899	1,976	1,700
Dividend income	142	149	263	239
Interest-bearing deposits with banks	221	116	374	187
Total interest income	12,307	10,146	24,108	19,572
INTEREST EXPENSE
Deposits	1,607	807	3,031	1,669
Repurchase agreements	1	1	2	2
Borrowings from Federal Home Loan Bank	520	615	998	1,125
Other borrowings	318	0	640	0
Total interest expense	2,446	1,423	4,671	2,796
Net interest income	9,861	8,723	19,437	16,776
Provision for loan losses	340	371	655	833
Net interest income after provision for loan losses	9,521	8,352	18,782	15,943
NONINTEREST INCOME
Service charges on deposit accounts	449	399	960	776
ATM and interchange fees	446	299	899	662
Net gain on sales of available for sale securities	1	0	1	0
Net gain (loss) on trading account securities	0	(59)	0	91
Net gain on sales of loans, Small Business Administration	521	1,488	1,485	3,027
Mortgage banking income	5,074	53	8,363	168
Increase in cash surrender value of life insurance	147	106	258	213
Commission income	77	98	134	226
Real estate lease income	157	1	315	1
Net gain on sale of premises and equipment	8	8	9	15
Other income	209	174	446	294
Total noninterest income	7,089	2,567	12,870	5,473
NONINTEREST EXPENSE
Compensation and benefits	8,240	4,408	15,497	8,419
Occupancy and equipment	1,420	923	2,745	1,665
Data processing	479	1,224	906	1,571
Advertising	567	178	963	295
Professional fees	504	493	964	866
FDIC insurance premiums	112	128	178	247
Net (gain) loss on other real estate owned	7	(22)	(14)	(178)
Other operating expenses	1,551	1,027	3,057	1,856
Total noninterest expense	12,880	8,359	24,296	14,741
Income before income taxes	3,730	2,560	7,356	6,675
Income tax expense	466	338	988	960
Net Income	3,264	2,222	6,368	5,715
Less: net income (loss) attributable to noncontrolling interests	(269)	576	(96)	663
Net Income Attributable to First Savings Financial Group, Inc.	$ 3,533	$ 1,646	$ 6,464	$ 5,052
Net income per share:
Basic	$ 1.53	$ 0.73	$ 2.82	$ 2.26
Diluted	$ 1.50	$ 0.69	$ 2.73	$ 2.14
Weighted average shares outstanding:
Basic	2,307,155	2,251,425	2,295,788	2,239,823
Diluted	2,360,004	2,370,260	2,366,524	2,363,606
Dividends per share	$ 0.16	$ 0.15	$ 0.31	$ 0.29

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Net Income	$ 3,264	$ 2,222	$ 6,368	$ 5,715
Unrealized gains (losses) on securities available for sale:
Unrealized holding gains (losses) arising during the period	2,964	(2,023)	4,744	(3,332)
Income tax benefit (expense)	(646)	441	(1,036)	733
Net of tax amount	2,318	(1,582)	3,708	(2,599)
Less: reclassification adjustment for realized gains included in net income	(1)	0	(1)	0
Income tax expense	0	0	0	0
Net of tax amount	(1)	0	(1)	0
Other Comprehensive Income (Loss)	2,317	(1,582)	3,707	(2,599)
Comprehensive Income	5,581	640	10,075	3,116
Less: comprehensive income (loss) attributable to noncontrolling interests	(269)	576	(96)	663
Comprehensive Income Attributable to First Savings Financial Group, Inc.	$ 5,850	$ 64	$ 10,171	$ 2,453

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income	Unearned Stock Compensation	Treasury Stock	Noncontrolling Interests in Subsidiary
Balances at Sep. 30, 2017	$ 93,115	$ 25	$ 27,798	$ 67,583	$ 4,158	$ (571)	$ (5,878)	$ 0
Net income	5,715	0	0	5,052	0	0	0	663
Other comprehensive loss	(2,599)	0	0	0	(2,599)	0	0	0
Reclassification from AOCI to retained earnings for change in federal tax rate	0	0	0	(619)	619	0	0	0
Common stock dividends	(655)	0	0	(655)	0	0	0	0
Restricted stock grants	0	1	56	0	0	(57)	0	0
Stock compensation expense	106	0	32	0	0	74	0	0
Stock option exercises	578	0	(209)	0	0	0	787	0
Purchase of treasury shares	(433)	0	0	0	0	0	(433)	0
Balances at Mar. 31, 2018	95,827	26	27,677	71,361	2,178	(554)	(5,524)	663
Balances at Sep. 30, 2018	100,245	26	27,630	76,523	382	(479)	(5,269)	1,432
Net income	6,368	0	0	6,464	0	0	0	(96)
Other comprehensive loss	3,707	0	0	0	3,707	0	0	0
Common stock dividends	(721)	0	0	(721)	0	0	0	0
Distributions to noncontrolling interests	(95)	0	0	0	0	0	0	(95)
Restricted stock grants	0	0	141	0	0	(141)	0	0
Stock compensation expense	120	0	35	0	0	86	0	0
Stock option exercises	877	0	(306)	0	0	0	1,183	0
Purchase of treasury shares	(573)	0	0	0	0	0	(573)	0
Balances at Mar. 31, 2019	$ 109,929	$ 26	$ 27,500	$ 82,266	$ 4,089	$ (534)	$ (4,659)	$ 1,241

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Dividends per common share	$ 0.31	$ 0.29
Restricted stock grants - shares	2,329	1,000
Stock option exercise, shares	61,484	42,296
Purchase of treasury shares, shares	10,968	6,729

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 6,368	$ 5,715
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for loan losses	655	833
Depreciation and amortization	860	634
Amortization of premiums and accretion of discounts on securities, net	240	274
Decrease in trading account securities	0	1,426
Amortization and accretion of fair value adjustments on loans, net	(318)	(186)
Loans originated for sale	(200,737)	(63,144)
Proceeds on sales of loans	191,800	71,516
Net realized and unrealized gain on loans held for sale	(7,762)	(3,195)
Net realized and unrealized gain on other real estate owned	(25)	(216)
Net gain on sales of available for sale securities	(1)	0
Increase in cash surrender value of life insurance	(258)	(213)
Net gain on sale of premises and equipment	(9)	(15)
Deferred income taxes	279	874
Stock compensation expense	120	106
Increase in accrued interest receivable	(315)	(149)
Increase in accrued interest payable	582	32
Change in other assets and liabilities, net	(1,178)	(3,691)
Net Cash Provided By (Used In) Operating Activities	(9,699)	10,601
CASH FLOWS FROM INVESTING ACTIVITIES
Investment in interest-bearing time deposits	(690)	(490)
Proceeds from sales and maturities of interest-bearing time deposits	245	3,986
Purchase of securities available for sale	(18,296)	(16,161)
Proceeds from sales of securities available for sale	226	32,262
Proceeds from maturities of securities available for sale	3,505	1,280
Proceeds from maturities of securities held to maturity	132	120
Principal collected on securities	12,354	7,127
Net increase in loans	(59,358)	(61,980)
Proceeds from redemption of Federal Reserve Bank stock	0	21
Purchase of Federal Home Loan Bank stock	(575)	(2,562)
Investment in cash surrender value of life insurance	(6,000)	0
Proceeds from life insurance	0	540
Proceeds from sale of other real estate owned	123	606
Purchase of premises and equipment	(7,992)	(643)
Proceeds from sales of premises and equipment	51	0
Net cash received in the acquisition of Dearmin Bancorp and FNBO	0	6,667
Net Cash Used In Investing Activities	(76,275)	(29,227)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposits	13,658	(2,360)
Net increase in repurchase agreements	1	2
Increase (decrease) in Federal Home Loan Bank line of credit	5,938	(3,842)
Proceeds from Federal Home Loan Bank advances	95,000	179,500
Repayment of Federal Home Loan Bank advances	(30,000)	(149,500)
Repayment of other long-term debt		0
Net increase (decrease) in advance payments by borrowers for taxes and insurance	56	(232)
Proceeds from exercise of stock options	337	189
Taxes paid on stock award shares for employees	(32)	(46)
Dividends paid on common stock	(721)	(314)
Distributions to noncontrolling interests	(95)	0
Net Cash Provided By Financing Activities	84,142	23,397
Net Increase (Decrease) in Cash and Cash Equivalents	(1,832)	4,771
Cash and cash equivalents at beginning of period	42,274	34,259
Cash and Cash Equivalents at End of Period	$ 40,442	$ 39,030

Presentation of Interim Informa

Presentation of Interim Information	6 Months Ended
	Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Presentation of Interim Information	1. Presentation of Interim Information First Savings Financial Group, Inc. (the “Company”) is a financial holding company and the parent of First Savings Bank (the “Bank”) and First Savings Insurance Risk Management, Inc. (the “Captive”). The Bank, which is a wholly-owned Indiana-chartered commercial bank subsidiary of the Company, provides a variety of banking services to individuals and business customers through 16 locations in southern Indiana. The Bank attracts deposits primarily from the general public and uses those funds, along with other borrowings, primarily to originate commercial mortgage, residential mortgage, construction, commercial business and consumer loans, and to a lesser extent, to invest in mortgage-backed securities, municipal bonds and other investment securities. The Bank has two wholly-owned subsidiaries: First Savings Investments, Inc., a Nevada corporation that manages a securities portfolio, and Southern Indiana Financial Corporation, which is currently inactive. The Captive, which is a wholly-owned insurance subsidiary of the Company, is a Nevada corporation that provides property and casualty insurance to the Company, the Bank and the Bank’s active subsidiaries. In addition, the Captive provides reinsurance to 11 other third-party insurance captives for which insurance may not be currently available or economically feasible in the insurance marketplace. On April 25, 2017, the Bank formed Q2 Business Capital, LLC (“Q2”), which is an Indiana limited liability company that specializes in the origination and servicing of U.S. Small Business Administration (“SBA”) loans. The Bank owns 51% of Q2 with the option to purchase the minority interest between July 1, 2020 and September 30, 2020. In accordance with Q2’s operating agreement, the Bank was allocated the first $1.7 million of Q2’s cumulative net income with any additional profits and losses allocated 51% to the Bank and 49% to Q2’s minority members. In the opinion of management, the accompanying unaudited consolidated financial statements include all adjustments considered necessary to present fairly the financial position as of March 31, 2019, the results of operations for the three- and six-month periods ended March 31, 2019 and 2018, and the cash flows for the six-month periods ended March 31, 2019 and 2018. All of these adjustments are of a normal, recurring nature. Such adjustments are the only adjustments included in the unaudited consolidated financial statements. Interim results are not necessarily indicative of results for a full year. The unaudited consolidated financial statements and notes have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial statements, conform to general practices within the banking industry and are presented as permitted by the instructions to Form 10-Q. Accordingly, they do not contain certain information included in the Company’s audited consolidated financial statements and related notes for the year ended September 30, 2018 included in the Company’s Annual Report on Form 10-K. The unaudited consolidated financial statements include the accounts of the Company and its subsidiaries. All material intercompany balances and transactions have been eliminated in consolidation. Certain prior period amounts have been reclassified to conform with the current period presentation. The reclassifications had no effect on net income or stockholders’ equity.

Acquisition of Dearmin Bancorp

Acquisition of Dearmin Bancorp and The First National Bank of Odon	6 Months Ended
	Mar. 31, 2019
Business Combinations [Abstract]
Acquisition of Dearmin Bancorp and The First National Bank of Odon	2. Acquisition of Dearmin Bancorp and The First National Bank of Odon On February 9, 2018, the Company acquired Dearmin Bancorp, Inc. (“Dearmin”) and its majority owned subsidiary, The First National Bank of Odon (“FNBO”), a full service community bank located in Odon, Indiana. The acquisition expanded the Company’s presence into Daviess County, Indiana. The Company expects to benefit from growth in this market area as well as from expansion of the banking services provided to the existing customers of FNBO. Cost savings are also expected for the combined bank through economies of scale, efficiencies and the consolidation of business operations. Pursuant to the terms of the merger agreement, FNBO stockholders received $265.00 in cash for each share of FNBO common stock for total cash consideration of $10.6 million. Under the acquisition method of accounting, the purchase price is assigned to the identifiable assets acquired and liabilities assumed based on their fair values, net of applicable income tax effects. In accounting for the acquisition, the excess of cost over the fair value of the acquired net assets of $1.9 million was recorded as goodwill. Transaction and integration costs related to the acquisition totaling $1.3 million were expensed as incurred for the three-month and six-month periods ended March 31, 2018. No transaction and integration costs were recognized for the three- and six-month periods ended March 31, 2019. Following is a condensed balance sheet providing the estimated fair values of the assets acquired and the liabilities assumed as of the date of acquisition: (In thousands) Cash and due from banks $ 1,310 Interest-bearing deposits with banks 15,957 Interest-bearing time deposits with banks 3,817 Investment securities 39,978 Loans, net 34,467 Premises and equipment 1,125 Goodwill arising in the acquisition 1,912 Core deposit intangible 1,487 Other assets 2,890 Total assets acquired 102,943 Deposit accounts 91,765 Net deferred tax liabilities 205 Other liabilities 373 Total liabilities assumed 92,343 Total consideration $ 10,600 In accounting for the acquisition, $1.5 million was assigned to a core deposit intangible which is amortized over a weighted-average estimated economic life of 9.1 years. It is not anticipated that the core deposit intangible will have a significant residual value. No amount of the goodwill or core deposit intangible arising in the acquisition is deductible for income tax purposes. Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality , applies to a loan with evidence of deterioration of credit quality since origination, acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. On the acquisition date, no loans were identified with evidence of deterioration of credit quality since origination. Loans acquired not subject to ASC 310-30 included non-impaired loans with a fair value of $34.5 million and gross contractual amounts receivable of $41.5 million at the date of acquisition.

Investment Securities

Investment Securities	6 Months Ended
	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Investment Securities	3. Investment Securities U.S. agency bonds and notes, agency mortgage-backed securities and agency collateralized mortgage obligations (“CMO”) include treasury notes issued by the U.S. government; securities issued by the Government National Mortgage Association (“GNMA”), a U.S. government agency; and securities issued by the Federal National Mortgage Association (“FNMA”), the Federal Home Loan Mortgage Corporation (“FHLMC”) and the Federal Home Loan Bank (“FHLB”), which are U.S. government sponsored enterprises. The Company holds municipal bonds issued by municipal governments within the U.S. The Company also holds pass-through asset-backed securities guaranteed by the SBA representing participating interests in pools of long term debentures issued by state and local development companies certified by the SBA. Privately issued CMO and asset-backed securities (“ABS”) are complex securities issued by non government special purpose entities that are collateralized by residential mortgage loans and residential home equity loans. Investment securities have been classified according to management’s intent. Trading Account Securities Prior to June 30, 2018, the Company invested in small and medium lot, investment grade municipal bonds through a managed brokerage account. The brokerage account was managed by an investment advisory firm registered with the U.S. Securities and Exchange Commission. During May 2018, the Company ceased its trading activity and had no trading account securities at September 30, 2018 or March 31, 2019. As such, there were no gains or losses on trading account securities during the three and six-month periods ended March 31, 2019. During the three-month period ended March 31, 2018, the Company reported a net loss on trading account securities of $59,000. During the six-month period ended March 31, 2018, the Company reported a net gain on trading account securities of $91,000. Securities Available for Sale and Held to Maturity The amortized cost of securities available for sale and held to maturity and their approximate fair values are as follows: Amortized Cost Gross Unrealized Gain Gross Unrealized Losses Fair Value (In thousands) March 31, 2019: Securities available for sale: Agency mortgage-backed $ 23,529 $ 179 $ 215 $ 23,493 Agency CMO 11,709 42 121 11,630 Privately-issued CMO 1,314 122 3 1,433 Privately-issued ABS 1,128 255 - 1,383 SBA certificates 1,196 42 5 1,233 Municipal bonds 146,951 5,157 198 151,910 Total securities available for sale $ 185,827 $ 5,797 $ 542 $ 191,082 Securities held to maturity: Agency mortgage-backed $ 125 $ 7 $ - $ 132 Municipal bonds 2,340 389 - 2,729 Total securities held to maturity $ 2,465 $ 396 $ - $ 2,861 Amortized Cost Gross Unrealized Gain Gross Unrealized Losses Fair Value (In thousands) September 30, 2018: Securities available for sale: Agency mortgage-backed $ 31,686 $ 90 $ 646 $ 31,130 Agency CMO 10,754 - 313 10,441 Privately-issued CMO 1,434 148 3 1,579 Privately-issued ABS 1,538 346 - 1,884 SBA certificates 1,305 53 7 1,351 Municipal bonds 137,144 2,189 1,345 137,988 Total securities available for sale $ 183,861 $ 2,826 $ 2,314 $ 184,373 Securities held to maturity: Agency mortgage-backed $ 134 $ 8 $ - $ 142 Municipal bonds 2,473 281 - 2,754 Total securities held to maturity $ 2,607 $ 289 $ - $ 2,896 The amortized cost and fair value of investment securities as of March 31, 2019 by contractual maturity are shown below. CMO, ABS, SBA certificates, and mortgage-backed securities which do not have a single maturity date are shown separately. Available for Sale Held to Maturity Amortized Cost Fair Value Amortized Cost Fair Value (In thousands) Due within one year $ 2,957 $ 2,975 $ 245 $ 284 Due after one year through five years 20,501 21,072 990 1,152 Due after five years through ten years 30,716 31,876 840 984 Due after ten years 92,777 95,987 265 309 CMO 13,023 13,063 - - ABS 1,128 1,383 - - SBA certificates 1,196 1,233 - - Mortgage-backed securities 23,529 23,493 125 132 $ 185,827 $ 191,082 $ 2,465 $ 2,861 Information pertaining to investment securities with gross unrealized losses at March 31, 2019 and September 30, 2018, aggregated by investment category and the length of time that individual securities have been in a continuous loss position, follows: Number of Investment Positions Fair Value Gross Unrealized Losses (Dollars in thousands) March 31, 2019: Securities available for sale: Continuous loss position less than twelve months: Agency mortgage-backed 2 $ 2,309 $ 1 Total less than twelve months 2 2,309 1 Continuous loss position more than twelve months: Agency mortgage-backed 19 12,542 214 Agency CMO 12 8,569 121 Privately-issued CMO 1 37 3 SBA certificates 1 519 5 Municipal bonds 23 11,312 198 Total more than twelve months 56 32,979 541 Total securities available for sale 58 $ 35,288 $ 542 September 30, 2018: Securities available for sale: Continuous loss position less than twelve months: Agency mortgage-backed 15 $ 14,814 $ 313 Agency CMO 4 2,560 54 Municipal bonds 93 44,162 944 Total less than twelve months 112 61,536 1,311 Continuous loss position more than twelve months: Agency mortgage-backed 11 9,283 333 Agency CMO 9 7,881 259 Privately-issued CMO 1 37 3 SBA certificates 1 617 7 Municipal bonds 8 6,106 401 Total more than twelve months 30 23,924 1,003 Total securities available for sale 142 $ 85,460 $ 2,314 At March 31, 2019 and September 30, 2018, the Company did not have any securities held to maturity with an unrealized loss. Management evaluates securities for other-than-temporary impairment at least on a quarterly basis, and more frequently when economic or market conditions warrant such evaluation. Consideration is given to (1) the length of time and the extent to which the fair value has been less than cost, (2) the financial condition and near-term prospects of the issuer, and (3) the intent and ability of the Company to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value. The total available for sale debt securities in loss positions at March 31, 2019, which consisted of U.S. government agency mortgage backed securities and CMOs, privately issued CMOs, SBA certificates and municipal bonds, had a fair value as a percentage of amortized cost of 98.49%. All of the agency and municipal securities are issued by U.S. government-sponsored enterprises and municipal governments, and are generally secured by first mortgage loans and municipal project revenues. The Company evaluates the existence of a potential credit loss component related to the decline in fair value of the privately issued CMO and ABS portfolios each quarter using an independent third party analysis. At March 31, 2019, the Company held fourteen privately-issued CMO and ABS securities, acquired in a 2009 bank merger, with an aggregate amortized cost of $1.2 million and fair value of $1.4 million that have been downgraded to a substandard regulatory classification due to the security’s credit quality rating by various nationally recognized statistical rating organizations (“NRSROs”). At March 31, 2019, one privately-issued CMO was in a loss position and had depreciated approximately 8.25% from the Company’s carrying value and was collateralized by residential mortgage loans. This security had a total fair value of $37,000 and a total unrealized loss of $3,000 at March 31, 2019, and was rated below investment grade by NRSROs. Based on the independent third party analysis of the expected cash flows, management has determined that no other-than-temporary impairment is required to be recognized on the remaining privately issued CMO and ABS portfolios. While the Company does not anticipate additional credit-related impairment losses at March 31, 2019, additional deterioration in market and economic conditions may have an adverse impact on the credit quality in the future, and therefore, require a credit related impairment charge. The unrealized losses on U.S. government agency mortgage-backed securities and CMOs, SBA certificates and municipal bonds relate principally to current interest rates for similar types of securities. In analyzing an issuer’s financial condition, management considers whether the securities are issued by the federal government, its agencies, or other governments, whether downgrades by bond rating agencies have occurred, and the results of reviews of the issuer’s financial condition. As management has the ability to hold debt securities to maturity, or for the foreseeable future if classified as available for sale, no declines are deemed to be other-than-temporary. During the three and six-month periods ended March 31, 2019, the Company realized gross gains on sales of available for sale securities of $1,000, and no gross losses. During the three and six-month periods ended March 31, 2018, the Company did not realize any gross gains or losses on sales of available for sale securities. Certain available for sale debt securities were pledged under repurchase agreements and to secure FHLB borrowings at March 31, 2019 and September 30, 2018, and may be pledged to secure federal funds borrowings.

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	6 Months Ended
	Mar. 31, 2019
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Loans and Allowance for Loan Losses	4. Loans and Allowance for Loan Losses Loans at March 31, 2019 and September 30, 2018 consisted of the following: March 31, 2019 September 30, 2018 (In thousands) Real estate mortgage: 1-4 family residential $ 198,526 $ 195,274 Commercial 383,754 343,498 Multifamily residential 34,430 28,814 Residential construction 16,209 19,527 Commercial construction 7,966 8,669 Land and land development 11,812 10,504 Commercial business 77,591 67,786 Consumer: Home equity 24,946 24,635 Auto 14,146 11,720 Other consumer 2,915 2,918 Total Loans 772,295 713,345 Deferred loan origination fees and costs, net 300 249 Allowance for loan losses (9,934 ) (9,323 ) Loans, net $ 762,661 $ 704,271 During the six-month period ended March 31, 2019, there was no significant change in the Company’s lending activities or the methodology used to estimate the allowance for loan losses as disclosed in the Company’s Annual Report on Form 10-K for the year ended September 30, 2018. At March 31, 2019 and September 30, 2018, the balance of other real estate owned includes $79,000 and $103,000, respectively, of residential real estate properties where physical possession has been obtained. At March 31, 2019 and September 30, 2018, the recorded investment in consumer mortgage loans collateralized by residential real estate properties in the process of foreclosure was $967,000 and $1.3 million, respectively. The following table provides the components of the recorded investment in loans as of March 31, 2019: Residential Real Estate Commercial Real Estate Multifamily Construction Land & Land Development Commercial Business Consumer Total (In thousands) Recorded Investment in Loans: Principal loan balance $ 198,526 $ 383,754 $ 34,430 $ 24,175 $ 11,812 $ 77,591 $ 42,007 $ 772,295 Accrued interest receivable 610 1,510 91 111 42 443 75 2,882 Net deferred loan origination fees and costs (87 ) 156 (38 ) (6 ) (6 ) 314 (33 ) 300 Recorded investment in loans $ 199,049 $ 385,420 $ 34,483 $ 24,280 $ 11,848 $ 78,348 $ 42,049 $ 775,477 Recorded Investment in Loans as Evaluated for Impairment: Individually evaluated for impairment $ 4,474 $ 8,725 $ - $ - $ - $ 297 $ 220 $ 13,716 Collectively evaluated for impairment 194,575 376,695 34,483 24,280 11,848 78,051 41,829 761,761 Ending balance $ 199,049 $ 385,420 $ 34,483 $ 24,280 $ 11,848 $ 78,348 $ 42,049 $ 775,477 The following table provides the components of the recorded investment in loans as of September 30, 2018: Residential Real Estate Commercial Real Estate Multifamily Construction Land & Land Development Commercial Business Consumer Total (In thousands) Recorded Investment in Loans: Principal loan balance $ 195,274 $ 343,498 $ 28,814 $ 28,196 $ 10,504 $ 67,786 $ 39,273 $ 713,345 Accrued interest receivable 589 1,403 81 156 24 365 69 2,687 Net deferred loan origination fees and costs (62 ) 104 (30 ) (5 ) (4 ) 275 (29 ) 249 Recorded investment in loans $ 195,801 $ 345,005 $ 28,865 $ 28,347 $ 10,524 $ 68,426 $ 39,313 $ 716,281 Recorded Investment in Loans as Evaluated for Impairment: Individually evaluated for impairment $ 5,107 $ 7,719 $ - $ - $ 27 $ 231 $ 243 $ 13,327 Collectively evaluated for impairment 190,694 337,286 28,865 28,347 10,497 68,195 39,070 702,954 Ending balance $ 195,801 $ 345,005 $ 28,865 $ 28,347 $ 10,524 $ 68,426 $ 39,313 $ 716,281 An analysis of the allowance for loan losses as of March 31, 2019 is as follows: Residential Real Estate Commercial Real Estate Multifamily Construction Land & Land Development Commercial Business Consumer Total (In thousands) Ending Allowance Balance Attributable to Loans: Individually evaluated for impairment $ - $ 963 $ - $ - $ - $ 70 $ 11 $ 1,044 Collectively evaluated for impairment 220 5,733 232 515 237 1,465 488 8,890 Ending balance $ 220 $ 6,696 $ 232 $ 515 $ 237 $ 1,535 $ 499 $ 9,934 An analysis of the allowance for loan losses as of September 30, 2018 is as follows: Residential Real Estate Commercial Real Estate Multifamily Construction Land & Land Development Commercial Business Consumer Total (In thousands) Ending Allowance Balance Attributable to Loans: Individually evaluated for impairment $ 7 $ 492 $ - $ - $ - $ - $ 12 $ 511 Collectively evaluated for impairment 267 6,333 195 580 210 1,041 186 8,812 Ending balance $ 274 $ 6,825 $ 195 $ 580 $ 210 $ 1,041 $ 198 $ 9,323 An analysis of the changes in the allowance for loan losses for the three months ended March 31, 2019 is as follows: Residential Real Estate Commercial Real Estate Multifamily Construction Land & Land Development Commercial Business Consumer Total (In thousands) Changes in Allowance for Loan Losses: Beginning balance $ 249 $ 6,716 $ 158 $ 693 $ 219 $ 1,288 $ 297 $ 9,620 Provisions (28 ) (20 ) 74 (178 ) 18 246 228 340 Charge-offs (9 ) - - - - - (39 ) (48 ) Recoveries 8 - - - - 1 13 22 Ending balance $ 220 $ 6,696 $ 232 $ 515 $ 237 $ 1,535 $ 499 $ 9,934 An analysis of the changes in the allowance for loan losses for the six months ended March 31, 2019 is as follows: Residential Real Estate Commercial Real Estate Multifamily Construction Land & Land Development Commercial Business Consumer Total (In thousands) Changes in Allowance for Loan Losses: Beginning balance $ 274 $ 6,825 $ 195 $ 580 $ 210 $ 1,041 $ 198 $ 9,323 Provisions (58 ) (129 ) 37 (65 ) 27 493 350 655 Charge-offs (10 ) - - - - - (81 ) (91 ) Recoveries 14 - - - - 1 32 47 Ending balance $ 220 $ 6,696 $ 232 $ 515 $ 237 $ 1,535 $ 499 $ 9,934 An analysis of the changes in the allowance for loan losses for the three months ended March 31, 2018 is as follows: Residential Real Estate Commercial Real Estate Multifamily Construction Land & Land Development Commercial Business Consumer Total (In thousands) Changes in Allowance for Loan Losses: Beginning balance $ 233 $ 6,106 $ 102 $ 903 $ 219 $ 816 $ 132 $ 8,511 Provisions 17 76 44 82 11 110 31 371 Charge-offs (11 ) - - - - - (32 ) (43 ) Recoveries 9 - - - - 1 15 25 Ending balance $ 248 $ 6,182 $ 146 $ 985 $ 230 $ 927 $ 146 $ 8,864 An analysis of the changes in the allowance for loan losses for the six months ended March 31, 2018 is as follows: Residential Real Estate Commercial Real Estate Multifamily Construction Land & Land Development Commercial Business Consumer Total (In thousands) Changes in Allowance for Loan Losses: Beginning balance $ 252 $ 5,739 $ 106 $ 810 $ 223 $ 839 $ 123 $ 8,092 Provisions (1 ) 443 40 175 7 87 82 833 Charge-offs (24 ) - - - - - (84 ) (108 ) Recoveries 21 - - - - 1 25 47 Ending balance $ 248 $ 6,182 $ 146 $ 985 $ 230 $ 927 $ 146 $ 8,864 The following table presents impaired loans individually evaluated for impairment as of March 31, 2019 and for the three and six months ended March 31, 2019 and 2018. At March 31, 2019 Three Months Ended March 31, Six Months Ended March 31, 2019 2019 2018 2018 2019 2019 2018 2018 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (In thousands) Loans with no related allowance recorded: Residential real estate $ 4,474 $ 4,965 $ - $ 5,132 $ 29 $ 5,247 $ 35 $ 5,203 $ 63 $ 5,136 $ 71 Commercial real estate 6,261 6,445 - 6,616 80 6,941 80 6,675 162 6,610 144 Multifamily - - - - - - - - - - - Construction - - - - - - - - - - - Land and land development - - - - - 29 - 12 - 29 - Commercial business 200 209 - 277 2 361 4 283 4 291 6 Consumer 111 115 - 118 1 121 1 119 2 110 2 $ 11,046 $ 11,734 $ - $ 12,143 $ 112 $ 12,699 $ 120 $ 12,292 $ 231 $ 12,176 $ 223 Loans with an allowance recorded: Residential real estate $ - $ - $ - $ 91 $ - $ 255 $ - $ 172 $ - $ 272 $ - Commercial real estate 2,464 2,538 963 2,104 - - - 1,722 - - - Multifamily - - - - - - - - - - - Construction - - - - - - - - - - - Land and land development - - - - - - - - - - - Commercial business 97 80 70 20 - - - 11 - - - Consumer 109 109 11 153 - 129 - 164 - 124 - $ 2,670 $ 2,727 $ 1,044 $ 2,368 $ - $ 384 $ - $ 2,069 $ - $ 396 $ - Total: Residential real estate $ 4,474 $ 4,965 $ - $ 5,223 $ 29 $ 5,502 $ 35 $ 5,375 $ 63 $ 5,408 $ 71 Commercial real estate 8,725 8,983 963 8,720 80 6,941 80 8,397 162 6,610 144 Multifamily - - - - - - - - - - - Construction - - - - - - - - - - - Land and land development - - - - - 29 - 12 - 29 - Commercial business 297 289 70 297 2 361 4 294 4 291 6 Consumer 220 224 11 271 1 250 1 283 2 234 2 $ 13,716 $ 14,461 $ 1,044 $ 14,511 $ 112 $ 13,083 $ 120 $ 14,361 $ 231 $ 12,572 $ 223 The Company did not recognize any interest income using the cash receipts method during the three- and six-month periods ended March 31, 2019 and 2018. The following table presents impaired loans individually evaluated for impairment as of September 30, 2018. Recorded Investment Unpaid Principal Balance Related Allowance (In thousands) Loans with no related allowance recorded: Residential real estate $ 4,833 $ 5,285 $ - Commercial real estate 6,568 6,715 - Multifamily - - - Construction - - - Land and land development 27 28 - Commercial business 231 241 - Consumer 122 123 - $ 11,781 $ 12,392 $ - Loans with an allowance recorded: Residential real estate $ 274 $ 282 $ 7 Commercial real estate 1,151 1,293 492 Multifamily - - - Construction - - - Land and land development - - - Commercial business - - - Consumer 121 128 12 $ 1,546 $ 1,703 $ 511 Total: Residential real estate $ 5,107 $ 5,567 $ 7 Commercial real estate 7,719 8,008 492 Multifamily - - - Construction - - - Land and land development 27 28 - Commercial business 231 241 - Consumer 243 251 12 $ 13,327 $ 14,095 $ 511 Nonperforming loans consist of nonaccrual loans and loans over 90 days past due and still accruing interest. The following table presents the recorded investment in nonperforming loans at March 31, 2019: Nonaccrual Loans Loans 90+ Days Past Due Still Accruing Total Nonperforming Loans (In thousands) Residential real estate $ 2,446 $ 141 $ 2,587 Commercial real estate 2,529 - 2,529 Multifamily - - - Construction - - - Land and land development - - - Commercial business 97 - 97 Consumer 143 15 158 Total $ 5,215 $ 156 $ 5,371 The following table presents the recorded investment in nonperforming loans at September 30, 2018: Nonaccrual Loans Loans 90+ Days Past Due Still Accruing Total Nonperforming Loans (In thousands) Residential real estate $ 2,711 $ 91 $ 2,802 Commercial real estate 1,284 - 1,284 Multifamily - - - Construction - - - Land and land development 27 - 27 Commercial business - - - Consumer 160 - 160 Total $ 4,182 $ 91 $ 4,273 The following table presents the aging of the recorded investment in past due loans at March 31, 2019: 30-59 Days Past Due 60-89 Days Past Due 90 + Days Past Due Total Past Due Current Total Loans (In thousands) Residential real estate $ 2,423 $ 71 $ 782 $ 3,276 $ 195,773 $ 199,049 Commercial real estate 843 29 2,057 2,929 382,491 385,420 Multifamily - - - - 34,483 34,483 Construction - - - - 24,280 24,280 Land and land development 39 48 - 87 11,761 11,848 Commercial business 53 - 96 149 78,199 78,348 Consumer 78 1 15 94 41,955 42,049 Total $ 3,436 $ 149 $ 2,950 $ 6,535 $ 768,942 $ 775,477 The following table presents the aging of the recorded investment in past due loans at September 30, 2018: 30-59 Days Past Due 60-89 Days Past Due 90 + Days Past Due Total Past Due Current Total Loans (In thousands) Residential real estate $ 2,088 $ 649 $ 1,202 $ 3,939 $ 191,862 $ 195,801 Commercial real estate 696 - 210 906 344,099 345,005 Multifamily - - - - 28,865 28,865 Construction - - - - 28,347 28,347 Land and land development - 27 - 27 10,497 10,524 Commercial business 7 - - 7 68,419 68,426 Consumer 43 37 32 112 39,201 39,313 Total $ 2,834 $ 713 $ 1,444 $ 4,991 $ 711,290 $ 716,281 The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, public information, historical payment experience, credit documentation, and current economic conditions and trends, among other factors. The Company classifies loans based on credit risk at least quarterly. The Company uses the following regulatory definitions for risk ratings: Special Mention: Loans classified as special mention have a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the Company’s credit position at some future date. Substandard: Loans classified as substandard are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Doubtful: Loans classified as doubtful have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. Loss: Loans classified as loss are considered uncollectible and of such little value that their continuance on the Company’s books as an asset is not warranted. Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered to be pass-rated loans. As of March 31, 2019, and based on the most recent analysis performed, the recorded investment in loans by risk category was as follows: Residential Real Estate Commercial Real Estate Multifamily Construction Land and Land Development Commercial Business Consumer Total (In thousands) Pass $ 194,698 $ 375,796 $ 33,998 $ 24,280 $ 11,848 $ 75,176 $ 41,979 $ 757,775 Special Mention - 1,063 - - - 400 - 1,463 Substandard 4,285 8,561 485 - - 2,772 67 16,170 Doubtful 66 - - - - - 3 69 Loss - - - - - - - - Total $ 199,049 $ 385,420 $ 34,483 $ 24,280 $ 11,848 $ 78,348 $ 42,049 $ 775,477 As of September 30, 2018, the recorded investment in loans by risk category was as follows: Residential Real Estate Commercial Real Estate Multifamily Construction Land and Land Development Commercial Business Consumer Total (In thousands) Pass $ 190,647 $ 338,256 $ 28,365 $ 28,347 $ 10,207 $ 66,162 $ 39,246 $ 701,230 Special Mention 19 - - - 290 - - 309 Substandard 5,061 6,749 500 - 27 2,264 67 14,668 Doubtful 74 - - - - - - 74 Loss - - - - - - - - Total $ 195,801 $ 345,005 $ 28,865 $ 28,347 $ 10,524 $ 68,426 $ 39,313 $ 716,281 Troubled Debt Restructurings Modification of a loan is considered to be a troubled debt restructuring (“TDR”) if the debtor is experiencing financial difficulties and the Company grants a concession to the debtor that it would not otherwise consider. By granting the concession, the Company expects to obtain more cash or other value from the debtor, or to increase the probability of receipt, than would be expected by not granting the concession. The concession may include, but is not limited to, reduction of the stated interest rate of the loan, reduction of accrued interest, extension of the maturity date or reduction of the face amount or maturity amount of the debt. A concession will be granted when, as a result of the restructuring, the Company does not expect to collect all amounts due, including interest at the original stated rate. A concession may also be granted if the debtor is not able to access funds elsewhere at a market rate for debt with similar risk characteristics as the restructured debt. The Company’s determination of whether a loan modification is a TDR considers the individual facts and circumstances surrounding each modification. Loans modified in a TDR may be retained on accrual status if the borrower has maintained a period of performance in which the borrower’s lending relationship was not greater than ninety days delinquent at the time of restructuring and the Company determines the future collection of principal and interest is reasonably assured. Loans modified in a TDR that are placed on nonaccrual status at the time of restructuring will continue on nonaccrual status until the Company determines the future collection of principal and interest is reasonably assured, which generally requires that the borrower demonstrate a period of performance according to the restructured terms of at least six consecutive months. The following table summarizes the Company’s recorded investment in TDRs at March 31, 2019 and September 30, 2018. There was no specific reserve included in the allowance for loan losses related to TDRs at March 31, 2019. There was $5,000 of specific reserve included in the allowance for loan losses related to TDRs at September 30, 2018. Accruing Nonaccrual Total (In thousands) March 31, 2019: Residential real estate $ 2,028 $ 293 $ 2,321 Commercial real estate 6,196 65 6,261 Commercial business 200 - 200 Consumer 77 - 77 Total $ 8,501 $ 358 $ 8,859 September 30, 2018: Residential real estate $ 2,396 $ 21 $ 2,417 Commercial real estate 6,435 65 6,500 Commercial business 231 - 231 Consumer 83 - 83 Total $ 9,145 $ 86 $ 9,231 There were no TDRs that were restructured during the three- and six-month periods ended March 31, 2019. The following table summarizes information in regard to TDRs that were restructured during the three- and six-month periods ended March 31, 2018: Number of Loans Pre- Modification Principal Balance Post- Modification Principal Balance (Dollars in thousands) Three Months Ended March 31, 2018: Residential real estate 1 $ 140 $ 120 Total 1 $ 140 $ 120 Six Months Ended March 31, 2018: Residential real estate 1 $ 140 $ 120 Commercial real estate 1 1,674 1,674 Commercial business 1 170 170 Consumer 1 3 3 Total 4 $ 1,987 $ 1,967 For the TDRs listed above, the terms of modification included deferral of contractual principal and interest payments, reduction of the stated interest rate and extension of the maturity date where the debtor was unable to access funds elsewhere at a market interest rate for debt with similar risk characteristics. At March 31, 2019 and September 30, 2018, the Company had committed to lend $1,000 to customers with outstanding loans classified as TDRs. There were no principal charge-offs recorded as a result of TDRs during the three- and six-month periods ended March 31, 2019 and 2018. There was no specific allowance for loan losses related to TDRs modified during the three- and six-month periods ended March 31, 2019 and 2018. In the event that a TDR subsequently defaults, the Company evaluates the restructuring for possible impairment. As a result, the related allowance for loan losses may be increased or charge-offs may be taken to reduce the carrying amount of the loan. During the six-month period ended March 31, 2019, the Company had one TDR with an outstanding balance of $114,000 that was modified within the previous twelve months and for which there was a payment default. During the three month period ended March 31, 2019 and the three- and six-month periods ended March 31, 2018, the Company did not have any TDRs that were modified within the previous twelve months and for which there was a payment default. Loan Servicing Rights The Company originates loans to commercial customers under the SBA 7(a) and other programs, and sells the guaranteed portion of the SBA loans with servicing rights retained. Loan servicing rights on originated SBA loans that have been sold are initially recorded at fair value. Capitalized servicing rights are then amortized in proportion to and over the period of estimated net servicing income. Impairment of servicing rights is assessed using the present value of estimated future cash flows. The aggregate fair value of loan servicing rights approximates its carrying value. A valuation model employed by an independent third party calculates the present value of future cash flows and is used to estimate fair value at the date of sale and on a quarterly basis for impairment analysis purposes. Management periodically compares the valuation model inputs and results to published industry data in order to validate the model results and assumptions. Key assumptions used to estimate the fair value of the loan servicing rights include the discount rate and prepayment speed assumptions. For purposes of impairment, risk characteristics such as interest rate, loan type, term and investor type are used to stratify the loan servicing rights. Impairment is recognized through a valuation allowance to the extent that fair value is less than the carrying amount. Changes in the valuation allowance are reported in net gain on sales of loans in the consolidated statements of income. The unpaid principal balance of SBA loans serviced for others was $137.6 million, $120.6 million and $96.9 million at March 31, 2019, September 30, 2018 and March 31, 2018, respectively. Contractually specified late fees and ancillary fees earned on SBA loans were $9,000 and $16,000 for the three- and six-month periods ended March 31, 2019, respectively. Contractually specified late fees and ancillary fees earned on SBA loans were $6,000 and $9,000 for the three- and six-month periods ended March 31, 2018, respectively. Net servicing income (contractually specified servicing fees offset by direct servicing expenses) related to SBA loans was $301,000 and $573,000 for the three- and six-month periods ended March 31, 2019, respectively. Net servicing income (contractually specified servicing fees offset by direct servicing expenses) related to SBA loans was $191,000 and $341,000 for the three- and six-month periods ended March 31, 2018, respectively. Net servicing income and costs are included in other noninterest income in the consolidated statements of income. An analysis of SBA loan servicing rights for the three- and six-month periods ended March 31, 2019 and 2018 is as follows: Three Months Ended Six Months Ended March 31, March 31, (In thousands) 2019 2018 2019 2018 (In thousands) Balance, beginning of period $ 2,554 $ 1,746 $ 2,405 $ 1,389 Servicing rights resulting from transfers of loans 192 438 443 867 Amortization (151 ) (68 ) (253 ) (140 ) Change in valuation allowance - - - - Balance, end of period $ 2,595 $ 2,116 $ 2,595 $ 2,116 Residential mortgage loans originated for sale in the secondary market continue to be sold with servicing released. The valuation allowance related to SBA loan servicing rights was $177,000 at March 31, 2019 and September 30, 2018.

Deposits

Deposits	6 Months Ended
	Mar. 31, 2019
Debt Disclosure [Abstract]
Deposits	5. Deposits Deposits at March 31, 2019 and September 30, 2018 consisted of the following: March 31, 2019 September 30, 2018 (In thousands) Noninterest-bearing demand deposits $ 162,901 $ 167,705 NOW accounts 170,454 173,543 Money market accounts 104,691 107,124 Savings accounts 121,978 120,995 Retail time deposits 136,640 123,007 Brokered time deposits 128,106 118,738 Total $ 824,770 $ 811,112

Supplemental Disclosure for Ear

Supplemental Disclosure for Earnings Per Share	6 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Supplemental Disclosure for Earnings Per Share	6. Supplemental Disclosure for Earnings Per Share Earnings per share information is presented below for the three- and six-month periods ended March 31, 2019 and 2018. Three Months Ended Six Months Ended March 31, March 31, 2019 2018 2019 2018 (Dollars in thousands, except per share data) Basic: Earnings: Net income attributable to First Savings Financial Group, Inc. $ 3,533 $ 1,646 $ 6,464 $ 5,052 Shares: Weighted average common shares outstanding, basic 2,307,155 2,251,425 2,295,788 2,239,823 Net income per common share, basic $ 1.53 $ 0.73 $ 2.82 $ 2.26 Diluted: Earnings: Net income attributable to First Savings Financial Group, Inc. $ 3,533 $ 1,646 $ 6,464 $ 5,052 Shares: Weighted average common shares outstanding, basic 2,307,155 2,251,425 2,295,788 2,239,823 Add: Dilutive effect of outstanding options 50,205 113,176 65,650 117,518 Add: Dilutive effect of restricted stock 2,644 5,659 5,086 6,265 Weighted average common shares outstanding, as adjusted 2,360,004 2,370,260 2,366,524 2,363,606 Net income per common share, diluted $ 1.50 $ 0.69 $ 2.73 $ 2.14 Nonvested restricted stock shares are not considered as outstanding for purposes of computing weighted average common shares outstanding. There were no antidilutive restricted stock awards excluded from the calculation of diluted net income per share for the three- and six-month periods ended March 31, 2019 and 2018. Stock options for 10,200 shares of common stock were excluded from the calculation of diluted net income per common share for the three- and six-month periods ended March 31, 2019, because their effect was antidilutive. There were no antidilutive stock options or restricted stock awards excluded from the calculation of diluted net income per share for the three- and six-month periods ended March 31, 2018.

Supplemental Disclosures of Cas

Supplemental Disclosures of Cash Flow Information	6 Months Ended
	Mar. 31, 2019
Supplemental Cash Flow Elements [Abstract]
Supplemental Disclosures of Cash Flow Information	7. Supplemental Disclosures of Cash Flow Information Six Months Ended March 31, 2019 2018 ( In thousands ) Cash payments for: Interest $ 4,095 $ 2,766 Income taxes (net of refunds received) 337 1,214 Noncash investing activities: Transfers from loans held for sale to loans - 560 Transfers from loans to foreclosed real estate 224 - Proceeds from sales of foreclosed real estate financed through loans 47 427 Noncash exercise of stock options 542 387 Transfers from premises and equipment to other real estate owned 1,838 -

Fair Value Measurements and Dis

Fair Value Measurements and Disclosures about Fair Value of Financial Instruments	6 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements and Disclosures about Fair Value of Financial Instruments	8. Fair Value Measurements and Disclosures about Fair Value of Financial Instruments FASB ASC Topic 820 , Fair Value Measurements, provides the framework for measuring fair value. That framework provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy under FASB ASC Topic 820 are described as follows: Level 1: Inputs to the valuation methodology are quoted prices, unadjusted, for identical assets or liabilities in active markets. A quoted market price in an active market provides the most reliable evidence of fair value and shall be used to measure fair value whenever available. Level 2: Inputs to the valuation methodology include quoted market prices for similar assets or liabilities in active markets; quoted market prices for identical or similar assets or liabilities in markets that are not active; or inputs that are derived principally from or can be corroborated by observable market data by correlation or other means. Level 3: Inputs to the valuation methodology are unobservable and significant to the fair value measurement. Level 3 assets and liabilities include financial instruments whose value is determined using discounted cash flow methodologies, as well as instruments for which the determination of fair value requires significant management judgment or estimation. A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. These valuation methodologies were applied to all of the Company’s financial assets and liabilities carried at fair value or the lower of cost or fair value. The tables below present the balances of financial assets and liabilities measured at fair value on a recurring and nonrecurring basis as of March 31, 2019 and September 30, 2018. The Company had no liabilities measured at fair value as of September 30, 2018. Carrying Value Level 1 Level 2 Level 3 Total (In thousands) March 31, 2019: Assets Measured - Recurring Basis: Securities available for sale: Agency mortgage-backed $ - $ 23,493 $ - $ 23,493 Agency CMO - 11,630 - 11,630 Privately-issued CMO - 1,433 - 1,433 Privately-issued ABS - 1,383 - 1,383 SBA certificates - 1,233 - 1,233 Municipal - 151,910 - 151,910 Total securities available for sale $ - $ 191,082 $ - $ 191,082 Residential mortgage loans held for sale – fair value option elected $ - $ 25,017 $ - $ 25,017 Derivative assets (included in other assets) $ - $ - $ 1,705 $ 1,705 Liabilities Measured – Recurring Basis: Derivative liabilities (included in other liabilities) $ - $ 384 $ - $ 384 Assets Measured - Nonrecurring Basis: Impaired loans: Residential real estate $ - $ - $ 4,474 $ 4,474 Commercial real estate - - 7,762 7,762 Commercial business - - 227 227 Consumer - - 209 209 Total impaired loans $ - $ - $ 12,672 $ 12,672 SBA loans held for sale $ - $ - $ 23,786 $ 23,786 Loan servicing rights $ - $ - $ 2,595 $ 2,595 Other real estate owned, held for sale: Residential real estate $ - $ - $ 79 $ 79 Former bank premises - - 1,838 1,838 Total other real estate owned $ - $ - $ 1,917 $ 1,917 Carrying Value Level 1 Level 2 Level 3 Total (In thousands) September 30, 2018: Assets Measured - Recurring Basis: Securities available for sale: Agency mortgage-backed $ - $ 31,130 $ - $ 31,130 Agency CMO - 10,441 - 10,441 Privately-issued CMO - 1,579 - 1,579 Privately-issued ABS - 1,884 - 1,884 SBA certificates - 1,351 - 1,351 Municipal - 137,988 - 137,988 Total securities available for sale $ - $ 184,373 $ - $ 184,373 Residential mortgage loans held for sale – fair value option elected $ - $ 9,952 $ - $ 9,952 Derivative assets (included in other assets) $ - $ 41 $ 380 $ 421 Assets Measured - Nonrecurring Basis: Impaired loans: Residential real estate $ - $ - $ 5,100 $ 5,100 Commercial real estate - - 7,227 7,227 Land and land development - - 27 27 Commercial business - - 231 231 Consumer - - 231 231 Total impaired loans $ - $ - $ 12,816 $ 12,816 Residential mortgage loans held for sale – fair value option not elected $ - $ 514 $ - $ 514 SBA loans held for sale $ - $ 21,659 $ - $ 21,659 Loan servicing rights $ - $ - $ 2,405 $ 2,405 Other real estate owned, held for sale: Residential real estate $ - $ - $ 103 $ 103 Total other real estate owned $ - $ - $ 103 $ 103 Fair value is based upon quoted market prices where available. If quoted market prices are not available, fair value is based on internally developed models or obtained from third parties that primarily use, as inputs, observable market-based parameters or a matrix pricing model that employs the Bond Market Association’s standard calculations for cash flow and price/yield analysis and observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value, or at the lower of cost or fair value. These adjustments may include unobservable parameters. Any such valuation adjustments have been applied consistently over time. The Company’s valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While management believes the Company’s valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Other than SBA loans held for sale (see discussion below), there have been no changes in the valuation techniques and related inputs used for assets measured at fair value on a recurring and nonrecurring basis during the six-month period ended March 31, 2019. Securities Available for Sale. Securities classified as available for sale are reported at fair value on a recurring basis. These securities are classified as Level 1 of the valuation hierarchy where quoted market prices from reputable third-party brokers are available in an active market. If quoted market prices are not available, the Company obtains fair value measurements from an independent pricing service. These securities are reported using Level 2 inputs and the fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, U.S. government and agency yield curves, live trading levels, trade execution data, market consensus prepayment speeds, credit information, and the security’s terms and conditions, among other factors. For securities where quoted market prices, market prices of similar securities or prices from an independent third party pricing service are not available, fair values are calculated using discounted cash flows or other market indicators and are classified within Level 3 of the fair value hierarchy. Changes in fair value of securities available for sale are recorded in other comprehensive income, net of income tax effect. Residential Mortgage Loans Held for Sale . Prior to June 30, 2018, residential mortgage loans held for sale were carried at the lower of cost or market value. Effective July 1, 2018, the Company elected to record substantially all of its residential mortgage loans held for sale at fair value in accordance with FASB ASC 825-10. The fair value of residential mortgage loans held for sale is based on specific prices of the underlying contracts for sale to investors or current secondary market prices for loans with similar characteristics, and is classified as level 2 in the fair value hierarchy. SBA Loans Held for Sale . SBA loans held for sale are carried at the lower of cost or market value. At September 30, 2018, the fair value of SBA loans held for sale was obtained from an independent third party pricing firm based on specific prices of the underlying contracts for sale to investors or current secondary market prices for loans with similar characteristics, and was classified as Level 2 in the fair value hierarchy. At March 31, 2019, the fair value of SBA loans held for sale reflects management’s estimate based on the weighted average price of SBA loans sold to investors during the prior quarter and is classified as Level 3 in the fair value hierarchy. Derivative Financial Instruments . Derivative financial instruments consist of mortgage banking interest rate lock commitments and forward mortgage loan sale commitments. The fair value of forward mortgage loan sale commitments is obtained from an independent third party and is based on the gain or loss that would occur if the Company were to pair-off the sales transaction with the investor. The fair value of forward mortgage loan sale commitments is classified as Level 2 in the fair value hierarchy. The fair value of interest rate lock commitments is also obtained from an independent third party and is based on investor prices for the underlying loans or current secondary market prices for loans with similar characteristics, less estimated costs to originate the loans and adjusted for the anticipated funding probability (pull-through rate). The fair value of interest rate lock commitments is classified as Level 3 in the fair value hierarchy. The table below presents a reconciliation of derivative assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three- and six-months ended March 31, 2019 and 2018: Three Months Ended Six Months Ended March 31, March 31, (In thousands) 2019 2018 2019 2018 Beginning balance $ 658 $ - $ 380 $ - Unrealized gains recognized in earnings 1,047 - 1,325 - Ending balance $ 1,705 $ - $ 1,705 $ - The realized and unrealized gains recognized in earnings in the table above are included in mortgage banking income on the accompanying consolidated statements of income. Gains recognized in earnings for the three- and six-months ended March 31, 2019 attributable to Level 3 assets held at the balance sheet date were $1.7 million. The table below presents information about significant unobservable inputs (Level 3) used in the valuation of assets measured at fair value on a recurring basis as of March 31, 2019 and September 30, 2018. Financial Instrument Significant Unobservable Inputs Range of Inputs March 31, 2019 Range of Inputs September 30, 2018 Interest rate lock commitments Pull-through rate 69 97 72 95 Direct costs to close 1 1 3 Impaired Loans . Impaired loans are reviewed and evaluated on at least a quarterly basis for additional impairment and adjusted accordingly. The fair value of impaired loans is classified as Level 3 in the fair value hierarchy. Impaired loans are measured at the present value of estimated future cash flows using the loan's effective interest rate or the fair value of the collateral if the loan is a collateral-dependent loan. At March 31, 2019 and September 30, 2018, all impaired loans were considered to be collateral dependent for the purpose of determining fair value. Collateral may be real estate and/or business assets, including equipment, inventory and/or accounts receivable, and its fair value is generally determined based on real estate appraisals or other independent evaluations by qualified professionals. The appraisals are generally then discounted by management in order to reflect management’s estimate of the fair value of the collateral given the current market conditions and the condition of the collateral. At March 31, 2019 and September 30, 2018, the significant unobservable inputs used in the fair value measurement of impaired loans included discounts from appraised value ranging from 0.0% to 15.0% and estimated costs to sell the collateral ranging from 0.0% to 6.0%. During the three-month periods ended March 31, 2019 and 2018, the Company recognized provisions for loan losses of $379,000 and $16,000, respectively, for impaired loans. During the six-month periods ended March 31, 2019 and 2018, the Company recognized provisions for loan losses of $546,000 and $18,000, respectively, for impaired loans. Loan Servicing Rights . Loan servicing rights represent the value associated with servicing SBA loans that have been sold. The fair value of loan servicing rights is determined on a quarterly basis by an independent third party valuation model using market-based discount rate and prepayment assumptions, and is classified as Level 3 in the fair value hierarchy. At March 31, 2019, the significant unobservable inputs used in the fair value measurement of loan servicing rights included discount rates ranging from 8.41% to 21.18% with a weighted average of 12.36% and prepayment speed assumptions ranging from 5.55% to 17.72% with a weighted average rate of 12.04%. At September 30, 2018, the significant unobservable inputs used in the fair value measurement of loan servicing rights included discount rates ranging from 10.84% to 23.22% with a weighted average of 14.63% and prepayment speed assumptions ranging from 4.32% to 14.43% with a weighted average rate of 10.08%. Impairment of the loan servicing rights is recognized on a quarterly basis through a valuation allowance to the extent that fair value is less than the carrying amount. The Company did not recognize any impairment charges on loan servicing rights for the three- and six-month periods ended March 31, 2019 and 2018. Other Real Estate Owned . Other real estate owned held for sale is reviewed and evaluated on at least a quarterly basis for additional impairment and adjusted accordingly. The fair value of other real estate owned is classified as Level 3 in the fair value hierarchy. Other real estate owned is reported at fair value, less estimated costs to dispose of the property. The fair values are determined by real estate appraisals, which are then generally discounted by management in order to reflect management’s estimate of the fair value of the property given current market conditions and the condition of the property. At March 31, 2019, the significant unobservable inputs used in the fair value measurement of other real estate owned included a discount from appraised value (including estimated costs to sell the property) ranging from 15.0% to 67.1% with a weighted average of 28.7%. At September 30, 2018, the significant unobservable inputs used in the fair value measurement of other real estate owned included a discount from appraised value (including estimated costs to sell the property) ranging from 15.0% to 100.0% with a weighted average of 48.9%. The Company did not recognize any charges to write down other real estate owned to fair value for the three- and six-month periods ended March 31, 2019 49,000 59,000 2018. Transfers Between Categories. As previously described, management used different valuation methodologies related to SBA loans held for sale at March 31, 2019 and September 30, 2018, resulting in a change in classification from Level 2 to Level 3 for those types of instruments. Other than that change, there were no transfers into or out of Levels 1, 2, or 3 of the fair value hierarchy for the three- and six-month periods ended March 31, 2019 and 2018. Financial Instruments Recorded Using Fair Value Option. Under FASB ASC 825-10, the Company may elect to report most financial instruments and certain other items at fair value on an instrument-by-instrument basis, with changes in fair value reported in income. The election is made at the acquisition of an eligible financial asset or financial liability, and may not be revoked once made. The Company has elected the fair value option for substantially all of its residential mortgage loans held for sale effective July 1, 2018, including all loans originated by the wholesale lending division. These loans are intended for sale and the Company believes that the fair value is the best indicator of the resolution of these loans. Interest income is recorded based on the contractual terms of the loans and in accordance with the Company’s policy on loans held for investment. There was one loan that was 90 days or more past due but has not been placed in nonaccrual status as of March 31, 2019 with an outstanding principal balance of less than $1,000. There were no loans that 90 days or more past due, nor were any on nonaccrual status as of September 30, 2018. The table below presents the difference between the aggregate fair value and the aggregate remaining principal balance for residential mortgage loans held for sale for which the fair value option had been elected as of March 31, 2019 and September 30, 2018. (In thousands) Aggregate Fair Value March 31, 2019 Aggregate Principal Balance March 31, 2019 Difference Residential mortgage loans held for sale $ 25,017 $ 23,959 $ 1,058 (In thousands) Aggregate Fair Value September 30, 2018 Aggregate Principal Balance September 30, 2018 Difference Residential mortgage loans held for sale $ 9,952 $ 9,695 $ 257 The table below presents gains and losses and interest included in earnings related to financial assets measured at fair value under the fair value option for the three- and six-month periods ended March 31, 2019 and 2018: Three Months Ended Six Months Ended March 31, March 31, (In thousands) 2019 2018 2019 2018 Gains – included in mortgage banking income $ 437 $ - $ 1,026 $ - Interest income 187 - 341 - $ 624 $ - $ 1,367 $ - GAAP requires disclosure of fair value information about financial instruments for interim reporting periods, whether or not recognized in the consolidated balance sheet. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, could not be realized in immediate settlement of the instruments. Accordingly, the aggregate fair value amounts presented do not represent the underlying value of the Company. The carrying amounts and estimated fair values of the Company's financial instruments are as follows. In accordance with the Company’s adoption of Accounting Standards Update (“ASU”) 2016-01 effective October 1, 2018, the table below for March 31, 2019 presents the fair values measured using an exit price notion. The fair value of loans at September 30, 2018 was measured using an entry price notion. Carrying Fair Value Measurements Using: Amount Level 1 Level 2 Level 3 (In thousands) March 31, 2019: Financial assets: Cash and due from banks $ 11,617 $ 11,617 $ - $ - Interest-bearing deposits with banks 28,825 28,825 - - Interest-bearing time deposits 2,963 - 2,958 - Securities available for sale 191,082 - 191,082 - Securities held to maturity 2,465 - 2,861 - Loans, net 762,661 - - 727,442 Residential mortgage loans held for sale 25,017 - 25,017 - SBA loans held for sale 23,786 - - 26,407 FRB and FHLB stock 10,196 N/A N/A N/A Accrued interest receivable 4,602 - 4,602 - Loan servicing rights (included in other assets) 2,595 - - 2,595 Derivative assets (included in other assets) 1,705 - - 1,705 Financial liabilities: Deposits 824,770 - - 824,193 Short-term repurchase agreements 1,353 - 1,353 - Borrowings from FHLB 160,938 - 155,264 - Subordinated note 19,695 - 19,695 - Accrued interest payable 1,325 - 1,325 - Advance payments by borrowers for taxes and insurance 1,274 - 1,274 - Derivative liabilities (included in other liabilities) 384 - 384 - Carrying Fair Value Measurements Using: Amount Level 1 Level 2 Level 3 (In thousands) September 30, 2018: Financial assets: Cash and due from banks $ 14,191 $ 14,191 $ - $ - Interest-bearing deposits with banks 28,083 28,083 - - Interest-bearing time deposits 2,501 - 2,494 - Securities available for sale 184,373 - 184,373 - Securities held to maturity 2,607 - 2,896 - Residential mortgage loans held for sale 10,466 - 10,476 - SBA loans held for sale 21,659 - 23,488 - Loans, net 704,271 - - 673,652 FRB and FHLB stock 9,621 N/A N/A N/A Accrued interest receivable 4,287 - 4,287 - Loan servicing rights (included in other assets) 2,405 - - 2,405 Derivative assets (included in other assets) 421 - 41 380 Financial liabilities: Deposits 811,112 - - 809,305 Short-term repurchase agreements 1,352 - 1,352 - Borrowings from FHLB 90,000 - 84,175 - Subordinated note 19,661 - 19,661 - Accrued interest payable 743 - 743 - Advance payments by borrowers for taxes and insurance 1,218 - 1,218 -

Employee Stock Ownership Plan

Employee Stock Ownership Plan	6 Months Ended
	Mar. 31, 2019
Retirement Benefits [Abstract]
Employee Stock Ownership Plan	9. Employee Stock Ownership Plan On October 6, 2008, the Company established a leveraged employee stock ownership plan (“ESOP”) covering substantially all employees. The ESOP trust acquired 203,363 shares of Company common stock at a cost of $10.00 per share financed by a term loan with the Company. The employer loan and the related interest income are not recognized in the consolidated financial statements because the debt is serviced from Company contributions. Dividends payable on allocated shares are charged to retained earnings and are satisfied by the allocation of cash dividends to participant accounts or by utilizing the dividends as additional debt service on the ESOP loan. Dividends payable on unallocated shares are not considered dividends for financial reporting purposes. Shares held by the ESOP trust are allocated to participant accounts based on the ratio of the current year principal and interest payments to the total of the current year and future years’ principal and interest to be paid on the employer loan. Compensation expense is recognized based on the average fair value of shares released for allocation to participant accounts during the year with a corresponding credit to stockholders’ equity. The ESOP loan was repaid in full during the quarter ended December 31, 2015 and all shares have been allocated to participants in the plan therefore no compensation expense was recognized for the three- and six-month periods ended March 31, 2019 and 2018. The ESOP trust held 147,110 and 151,999 shares of Company common stock at March 31, 2019 and September 30, 2018, respectively.

Stock Based Compensation Plans

Stock Based Compensation Plans	6 Months Ended
	Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Based Compensation Plans	10. Stock Based Compensation Plans The Company maintains two equity incentive plans under which stock options and restricted stock have been or can be granted, the 2010 Equity Incentive Plan (“2010 Plan”), approved by the Company’s shareholders in February 2010, and the 2016 Equity Incentive Plan (“2016 Plan”), approved by the Company’s shareholders in February 2016. The aggregate number of shares of the Company’s common stock available for issuance under the 2016 Plan may not exceed 88,000 shares, consisting of 66,000 stock options and 22,000 shares of restricted stock. At March 31, 2019, 8,658 shares of the Company’s common stock were available for issuance under the 2010 Plan as stock options and 11,991 shares of the Company’s common stock were available for issuance under the 2016 Plan, consisting of 10,555 stock options and 1,436 shares of restricted stock. Stock Options Under the plans, the Company may grant both non-statutory and incentive stock options that may not have a term exceeding ten years. In the case of incentive stock options, the aggregate fair value (determined at the time the incentive stock options are granted) which are first exercisable during any calendar year shall not exceed $100,000. Exercise prices generally may not be less than the fair market value of the underlying stock at the date of the grant. The terms of the plans also include provisions whereby all unearned options and restricted shares become immediately exercisable and fully vested upon a change in control. Stock options granted generally vest ratably over five years and are exercisable in whole or in part for a period up to ten years from the date of the grant. Compensation expense is measured based on the fair market value of the options at the grant date and is recognized ratably over the period during which the shares are earned (the vesting period). The fair market value of stock options granted is estimated at the date of grant using a binomial option pricing model. Expected volatilities are based on historical volatility of the Company’s stock. The expected term of options granted represents the period of time that options are expected to be outstanding. The risk free rate for the expected life of the options is based on the U.S. Treasury yield curve in effect at the grant date. The fair value of options granted during the six-month period ended March 31, 2019 was determined using the following assumptions: Expected dividend yield 1.75 % Risk-free interest rate 2.13 % Expected volatility 14.6 % Expected life of options 7.5 years Weighted average fair value at grant date $ 6.13 A summary of stock option activity as of March 31, 2019, and changes during the six-month period then ended is presented below. Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (Dollars in thousands, except per share data) Outstanding at beginning of period 150,033 $ 24.88 Granted 2,400 59.23 Exercised (61,484 ) 14.30 Forfeited or expired (750 ) 40.09 Outstanding at end of period 90,199 $ 32.88 5.4 $ 2,001 Vested and expected to vest 90,199 $ 32.88 5.4 $ 2,001 Exercisable at end of period 50,872 $ 22.90 3.4 $ 1,586 The intrinsic value of stock options exercised during the six-month period ended March 31, 2019 was $2.4 million. The intrinsic value of stock options exercised during the six-month period ended March 31, 2018 was $2.1 million. The Company recognized compensation expense related to stock options of $17,000 and $35,000 for the three- and six-month periods ended March 31, 2019, respectively. The Company recognized compensation expense related to stock options of $16,000 and $33,000 for the three- and six-month periods ended March 31, 2018, respectively. At March 31, 2019, there was $211,000 of unrecognized compensation expense related to nonvested stock options. The compensation expense is expected to be recognized over the remaining vesting period of 4.6 years. Restricted Stock The vesting period of restricted stock granted under the plans is generally five years beginning one year after the date of grant of the awards. Compensation expense is measured based on the fair market value of the restricted stock at the grant date and is recognized ratably over the vesting period. Compensation expense related to restricted stock recognized for the three and six-month periods ended March 31, 2019 was $44,000 and $85,000, respectively. Compensation expense related to restricted stock recognized for the three and six-month periods ended March 31, 2018 was $37,000 and $73,000, respectively. A summary of the Company’s nonvested restricted shares activity as of March 31, 2019 and changes during the six-month period then ended is presented below. Weighted Number Average of Grant Date Shares Fair Value Nonvested at October 1, 2018 14,812 $ 41.20 Granted 2,500 $ 59.23 Vested (3,653 ) $ 40.99 Forfeited (201 ) $ 40.09 Nonvested at March 31, 2019 13,458 $ 44.62 There were 3,653 restricted shares vested during the six-month period ended March 31, 2019 with a total fair value of $216,000. There were 3,453 restricted shares that vested during the six-month period ended March 30, 2018 with a total fair value of $195,000. At March 31, 2019, there was $534,000 of unrecognized compensation expense related to nonvested restricted shares. The compensation expense is expected to be recognized over the remaining vesting period of 4.6 years.

Derivative Financial Instrument

Derivative Financial Instruments	6 Months Ended
	Mar. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	11. Derivative Financial Instruments The Company enters into commitments to originate loans whereby the interest rate on the loan is determined prior to funding (i.e., rate lock commitment). The Company also enters into forward mortgage loan commitments to sell to various investors to protect itself against exposure to various factors and to reduce sensitivity to interest rate movements. Both the interest rate lock commitments and the related forward mortgage loan sales contracts are considered derivatives and are recorded on the balance sheet at fair value in accordance with FASB ASC 815, Derivatives and Hedging , with changes in fair value recorded in mortgage banking income in the accompanying consolidated statements of income. All such derivatives are considered stand-alone derivatives and have not been formally designated as hedges by management. Certain financial instruments, including derivatives, may be eligible for offset in the balance sheet when the “right of setoff” exists or when the instruments are subject to an enforceable master netting agreement, which includes the right of the non-defaulting party or non-affected party to offset recognized amounts, including collateral posted with the counterparty, to determine a net receivable or net payable upon early termination of the agreement. Certain of the Company’s derivative instruments are subject to master netting agreements. However, the Company has not elected to offset such financial instruments in the consolidated balance sheets. The tables below provide information on the Company’s derivative financial instruments as of March 31, 2019 and September 30, 2018. (In thousands) Notional Amount March 31, 2019 Asset Derivatives March 31, 2019 Liability Derivatives March 31, 2019 Interest rate lock commitments $ 89,782 $ 1,705 $ - Forward mortgage loan sale contracts 63,500 - 384 $ 153,282 $ 1,705 $ 384 (In thousands) Notional Amount September 30, 2018 Asset Derivatives September 30, 2018 Liability Derivatives September 30, 2018 Interest rate lock commitments $ 16,634 $ 380 $ - Forward mortgage loan sale contracts 13,750 41 - $ 30,384 $ 421 $ - Income (loss) related to derivative financial instruments included in mortgage banking income in the accompanying consolidated statements of income for the three- and six-month periods ended March 31, 2019 and 2018 is as follows: Three Months Ended Six Months Ended March 31, March 31, (In thousands) 2019 2018 2019 2018 Interest rate lock commitments $ 1,047 $ - $ 1,325 $ - Forward mortgage loan sale contracts (624 ) - (775 ) - $ 423 $ - $ 550 $ -

Regulatory Capital

Regulatory Capital	6 Months Ended
	Mar. 31, 2019
Banking and Thrift [Abstract]
Regulatory Capital	12. Regulatory Capital The Company and Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and Bank must meet specific capital guidelines that involve quantitative measures of the Company’s and Bank’s assets, liabilities, and certain off-balance-sheet items as calculated under regulatory accounting practices. The Company’s and Bank’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. Quantitative measures established by regulation to ensure capital adequacy require the Company and Bank to maintain minimum amounts and ratios (set forth in the table below) of total, Tier 1 and common equity Tier 1 capital (as defined in the regulations) to risk-weighted assets (as defined), and Tier 1 capital (as defined) to average assets (as defined). The final rules implementing the Basel Committee on Banking Supervision’s capital guidelines for U.S. banks (“Basel III rules”) became effective for the Company and the Bank on January 1, 2015, with full compliance with all of the requirements being phased in over a multi-year schedule through 2019. Under the Basel III rules, the Bank must hold a conservation buffer above the adequately capitalized risk-based capital ratios disclosed in the table below. The capital conservation buffer was phased in from 0.0% for 2015 to 2.5% by 2019. The capital conservation buffer was 1.875% for 2018 and 2.5% for 2019. The Company and Bank met all capital adequacy requirements to which they are subject as of March 31, 2019 and September 30, 2018. As of March 31, 2019, the most recent notification from the Federal Reserve Bank categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, the Bank must maintain minimum total risk-based, Tier 1 risk-based, common equity Tier 1 risk-based and Tier 1 leverage ratios as set forth in the table below. There are no conditions or events since that notification that management believes have changed the Bank’s category. The Company’s and Bank’s actual capital amounts and ratios are also presented in the table. No amount was deducted from capital for interest-rate risk at either period. Minimum To Be Well Minimum Capitalized Under For Capital Prompt Corrective Actual Adequacy Purposes: Action Provisions: Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) As of March 31, 2019: Total capital (to risk-weighted assets): Consolidated $ 121,718 14.12 % $ 68,978 8.00 % N/A N/A Bank 111,468 12.95 68,854 8.00 $ 86,068 10.00 % Tier 1 capital (to risk-weighted assets): Consolidated $ 92,089 10.68 % $ 51,733 6.00 % N/A N/A Bank 101,534 11.80 51,641 6.00 $ 68,854 8.00 % Common equity tier 1 capital (to risk-weighted assets): Consolidated $ 92,089 10.68 % $ 38,800 4.50 % N/A N/A Bank 101,534 11.80 38,730 4.50 $ 55,944 6.50 % Tier 1 capital (to average adjusted total assets): Consolidated $ 92,089 8.42 % $ 43,751 4.00 % N/A N/A Bank 101,534 9.31 43,623 4.00 $ 54,529 5.00 % As of September 30, 2018: Total capital (to risk-weighted assets): Consolidated $ 114,911 14.50 % $ 63,402 8.00 % N/A N/A Bank 102,281 12.92 63,312 8.00 $ 79,140 10.00 % Tier 1 capital (to risk-weighted assets): Consolidated $ 85,927 10.84 % $ 47,551 6.00 % N/A N/A Bank 92,958 11.75 47,484 6.00 $ 63,312 8.00 % Common equity tier 1 capital (to risk-weighted assets): Consolidated $ 85,927 10.84 % $ 35,663 4.50 % N/A N/A Bank 92,958 11.75 35,613 4.50 $ 51,441 6.50 % Tier 1 capital (to average adjusted total assets): Consolidated $ 85,927 8.39 % $ 40,982 4.00 % N/A N/A Bank 92,958 9.10 40,840 4.00 $ 51,050 5.00 %

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Mar. 31, 2019
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	13. Recent Accounting Pronouncements The following are summaries of recently issued or adopted accounting pronouncements that impact the accounting and reporting practices of the Company: In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) . The guidance supersedes existing guidance on accounting for leases with the main difference being that operating leases are to be recorded in the statement of financial position as right-of-use assets and lease liabilities, initially measured at the present value of the lease payments. For operating leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election not to recognize lease assets and liabilities. For public business entities, the guidance is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application of the guidance is permitted. In transition, entities are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. In July 2018, the FASB issued ASU No. 2018-11, Leases (Topic 842): Targeted Improvements , which provides an additional, optional transition method related to implementing the new leases standard. ASU 2018-11 provides that companies can initially apply the new leases standard at adoption and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. Management is evaluating the new guidance and expects to report increased assets and liabilities as a result of recording right-of-use assets and lease liabilities. However, based on current lease obligations, the adoption is expected to increase the Company’s consolidated balance sheet by less than 5% and not have a material impact on the Company’s and the Bank’s regulatory capital ratios. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326) . The update replaces the incurred loss methodology for recognizing credit losses under current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. Under the new guidance, an entity will measure all expected credit losses for financial instruments held at the reporting date based on historical experience, current conditions and reasonable and supportable forecasts. The expected loss model will apply to loans and leases, unfunded lending commitments, held-to-maturity debt securities and other debt instruments measured at amortized cost. The impairment model for available-for-sale debt securities will require the recognition of credit losses through a valuation allowance when fair value is less than amortized cost, regardless of whether the impairment is considered to be other-than-temporary. For the Company, the amendments in the update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted as of fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company is currently assessing the impact the guidance will have upon adoption. Management expects to recognize a one-time cumulative-effect adjustment to the allowance for loan losses through retained earnings as of the beginning of the first reporting period in which the new standard is effective; however, the magnitude of the adjustment is unknown. In planning for the implementation of ASU 2016-13, management is currently evaluating software solutions, data requirements and loss methodologies. In March 2017, the FASB issued ASU No. 2017-08, Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20) – Premium Amortization on Purchased Callable Debt Securities . The update shortens the amortization period for certain callable debt securities held at a premium. Specifically, the update requires the premium to be amortized to the earliest call date. The update does not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The amendments in the update are effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. An entity should apply the amendments in this update on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. Additionally, in the period of adoption, an entity should provide disclosures about a change in accounting principle. The adoption of this update is not expected to have a material impact on the Company’s consolidated financial position or results of operations. In August 2018, the FASB issued ASU No. 2018-13, Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement

Segment Reporting

Segment Reporting	6 Months Ended
	Mar. 31, 2019
Segment Reporting [Abstract]
Segment Reporting	14. Segment Reporting The Company’s operations include three primary segments: core banking, SBA lending, and mortgage banking. The core banking segment originates residential, commercial and consumer loans and attracts deposits from its customer base. Net interest income from loans and investments that are funded by deposits and borrowings is the primary revenue for the core banking segment. The SBA lending segment originates loans guaranteed by the SBA, subsequently selling the guaranteed portion to outside investors. Net gains on sales of loans and net interest income are the primary sources of revenue for the SBA lending segment. The mortgage banking segment originates residential mortgage loans and sells them in the secondary market. Net gains on the sales of loans, income from derivative financial instruments and net interest income are the primary sources of revenue for the mortgage banking segment. The core banking segment is comprised primarily by the Bank and First Savings Investments, Inc., while the SBA lending segment’s revenues are comprised primarily of net interest income and gains on the sales of SBA loans generated by Q2. The mortgage banking segment operates as a separate division of the Bank and began operations in April 2018. The following segment financial information has been derived from the internal financial statements of the Company which are used by management to monitor and manage financial performance. The accounting policies of the three segments are the same as those of the Company. The amounts reflected in the “Other” column in the below tables represent combined balances of the Company and the Captive, and are the primary differences between the sum of the segment amounts and consolidated totals, along with amounts to eliminate transactions between segments. Core Banking SBA Lending Mortgage Banking Other Consolidated Totals (In thousands) Three Months Ended March 31, 2019: Net interest income $ 9,043 $ 934 $ 187 $ (309 ) $ 9,861 Net gains on sales of loans, SBA - 521 - - 521 Mortgage banking income 3 - 5,071 - 5,074 Noncash items: Provision for loan losses (492 ) 832 - - 340 Depreciation and amortization 323 12 23 18 376 Income tax expense (benefit) 694 (70 ) 176 (334 ) 466 Segment profit (loss) 3,185 (477 ) 528 28 3,264 Segment assets at March 31, 2019 1,093,766 80,521 27,346 (71,911 ) 1,129,722 Core Banking SBA Lending Mortgage Banking Other Consolidated Totals (In thousands) Six Months Ended March 31, 2019: Net interest income $ 17,863 $ 1,842 $ 341 $ (609 ) $ 19,437 Net gains on sales of loans, SBA - 1,485 - - 1,485 Mortgage banking income 30 - 8,333 - 8,363 Noncash items: Provision for loan losses (508 ) 1,163 - - 655 Depreciation and amortization 759 24 43 34 860 Income tax expense (benefit) 1,319 (25 ) 163 (469 ) 988 Segment profit 6,165 (170 ) 491 (118 ) 6,368 Segment assets at March 31, 2019 1,093,766 80,521 27,346 (71,911 ) 1,129,722 Core Banking SBA Lending Mortgage Banking Other Consolidated Totals (In thousands) Three Months Ended March 31, 2018: Net interest income $ 7,975 $ 741 $ - $ 7 $ 8,723 Net gains on sales of loans, SBA - 1,488 - - 1,488 Mortgage banking income 53 - - - 53 Noncash items: Provision for loan losses 256 115 - 371 Depreciation and amortization 321 13 - - 334 Income tax expense (benefit) 323 171 - (156 ) 338 Segment profit (loss) 1,230 1,004 - (12 ) 2,222 Segment assets at March 31, 2018 1,001,206 58,690 - (51,342 ) 1,008,554 Core Banking SBA Lending Mortgage Banking Other Consolidated Totals (In thousands) Six Months Ended March 31, 2018: Net interest income $ 15,494 $ 1,268 $ - $ 14 $ 16,776 Net gains on sales of loans, SBA - 3,027 - - 3,027 Mortgage banking income 168 - - - 168 Noncash items: Provision for loan losses (138 ) 971 - - 833 Depreciation and amortization 608 26 - - 634 Income tax expense (benefit) 978 203 - (221 ) 960 Segment profit 4,417 1,190 - 108 5,715 Segment assets at March 31, 2018 1,001,206 58,690 (51,342 ) 1,008,554

Revenue from Contracts with Cus

Revenue from Contracts with Customers	6 Months Ended
	Mar. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer	15. Revenue from Contracts with Customers As of October 1, 2018, the Company adopted ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), using the modified retrospective approach. The adoption of the ASU had no material impact on the measurement or recognition of revenue; however, additional disclosures have been added in accordance with the ASU. All of the Company’s revenue from contracts with customers within the scope of FASB ASC 606 is recognized within noninterest income. The following table presents the Company’s sources of noninterest income for the three- and six-month periods ended March 31, 2019 and 2018: Three Months Ended Six Months Ended March 31, March 31, 2019 2018 2019 2018 (In thousands) Service charges on deposit accounts $ 449 $ 399 $ 960 $ 776 ATM and interchange fees 446 299 899 662 Investment advisory income 77 98 134 226 Other 43 30 80 66 Revenue from contracts with customers 1,015 826 2,073 1,730 Gain (loss) on sale of securities 1 (59 ) 1 91 Gain on sale of SBA loans 521 1,488 1,485 3,027 Mortgage banking income 5,074 53 8,363 168 Increase in cash value of life insurance 147 106 258 213 Real estate lease income 157 1 315 1 Other 174 152 375 243 Other noninterest income 6,074 1,741 10,797 3,743 Total noninterest income $ 7,089 $ 2,567 $ 12,870 $ 5,473 A description of the Company’s revenue streams accounted for under FASB ASC 606 follows: Service Charges on Deposit Accounts : The Company earns fees from its deposit customers for transaction-based, account maintenance, and overdraft services. Transaction-based fees, which include services such as wire fees, stop payment charges, statement rendering, and ACH fees, are recognized at the time the transaction is executed as that is the point in time the Company fulfills the customer's request. Account maintenance fees, which relate primarily to monthly maintenance, are earned over the course of a month, representing the period over which the Company satisfies the performance obligation. Overdraft fees are recognized at the point in time that the overdraft occurs. ATM and Interchange Fees Investment Advisory Income Other Income

Acquisition of Dearmin Bancor_2

Acquisition of Dearmin Bancorp and The First National Bank of Odon (Tables)	6 Months Ended
	Mar. 31, 2019
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	Following is a condensed balance sheet providing the estimated fair values of the assets acquired and the liabilities assumed as of the date of acquisition: (In thousands) Cash and due from banks $ 1,310 Interest-bearing deposits with banks 15,957 Interest-bearing time deposits with banks 3,817 Investment securities 39,978 Loans, net 34,467 Premises and equipment 1,125 Goodwill arising in the acquisition 1,912 Core deposit intangible 1,487 Other assets 2,890 Total assets acquired 102,943 Deposit accounts 91,765 Net deferred tax liabilities 205 Other liabilities 373 Total liabilities assumed 92,343 Total consideration $ 10,600

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Amortized Cost and Fair Value of Securities	The amortized cost of securities available for sale and held to maturity and their approximate fair values are as follows: Amortized Cost Gross Unrealized Gain Gross Unrealized Losses Fair Value (In thousands) March 31, 2019: Securities available for sale: Agency mortgage-backed $ 23,529 $ 179 $ 215 $ 23,493 Agency CMO 11,709 42 121 11,630 Privately-issued CMO 1,314 122 3 1,433 Privately-issued ABS 1,128 255 - 1,383 SBA certificates 1,196 42 5 1,233 Municipal bonds 146,951 5,157 198 151,910 Total securities available for sale $ 185,827 $ 5,797 $ 542 $ 191,082 Securities held to maturity: Agency mortgage-backed $ 125 $ 7 $ - $ 132 Municipal bonds 2,340 389 - 2,729 Total securities held to maturity $ 2,465 $ 396 $ - $ 2,861 Amortized Cost Gross Unrealized Gain Gross Unrealized Losses Fair Value (In thousands) September 30, 2018: Securities available for sale: Agency mortgage-backed $ 31,686 $ 90 $ 646 $ 31,130 Agency CMO 10,754 - 313 10,441 Privately-issued CMO 1,434 148 3 1,579 Privately-issued ABS 1,538 346 - 1,884 SBA certificates 1,305 53 7 1,351 Municipal bonds 137,144 2,189 1,345 137,988 Total securities available for sale $ 183,861 $ 2,826 $ 2,314 $ 184,373 Securities held to maturity: Agency mortgage-backed $ 134 $ 8 $ - $ 142 Municipal bonds 2,473 281 - 2,754 Total securities held to maturity $ 2,607 $ 289 $ - $ 2,896
Amortized Cost and Fair Value of Investment Securities by Contractual Maturity	The amortized cost and fair value of investment securities as of March 31, 2019 by contractual maturity are shown below. CMO, ABS, SBA certificates, and mortgage-backed securities which do not have a single maturity date are shown separately. Available for Sale Held to Maturity Amortized Cost Fair Value Amortized Cost Fair Value (In thousands) Due within one year $ 2,957 $ 2,975 $ 245 $ 284 Due after one year through five years 20,501 21,072 990 1,152 Due after five years through ten years 30,716 31,876 840 984 Due after ten years 92,777 95,987 265 309 CMO 13,023 13,063 - - ABS 1,128 1,383 - - SBA certificates 1,196 1,233 - - Mortgage-backed securities 23,529 23,493 125 132 $ 185,827 $ 191,082 $ 2,465 $ 2,861
Available for Sale Securities with Gross Unrealized Losses by Investment Category and Length of Time Individual Securities Have Been in Continuous Loss Position	Information pertaining to investment securities with gross unrealized losses at March 31, 2019 and September 30, 2018, aggregated by investment category and the length of time that individual securities have been in a continuous loss position, follows: Number of Investment Positions Fair Value Gross Unrealized Losses (Dollars in thousands) March 31, 2019: Securities available for sale: Continuous loss position less than twelve months: Agency mortgage-backed 2 $ 2,309 $ 1 Total less than twelve months 2 2,309 1 Continuous loss position more than twelve months: Agency mortgage-backed 19 12,542 214 Agency CMO 12 8,569 121 Privately-issued CMO 1 37 3 SBA certificates 1 519 5 Municipal bonds 23 11,312 198 Total more than twelve months 56 32,979 541 Total securities available for sale 58 $ 35,288 $ 542 September 30, 2018: Securities available for sale: Continuous loss position less than twelve months: Agency mortgage-backed 15 $ 14,814 $ 313 Agency CMO 4 2,560 54 Municipal bonds 93 44,162 944 Total less than twelve months 112 61,536 1,311 Continuous loss position more than twelve months: Agency mortgage-backed 11 9,283 333 Agency CMO 9 7,881 259 Privately-issued CMO 1 37 3 SBA certificates 1 617 7 Municipal bonds 8 6,106 401 Total more than twelve months 30 23,924 1,003 Total securities available for sale 142 $ 85,460 $ 2,314

Loans and Allowance for Loan _2

Loans and Allowance for Loan Losses (Tables)	6 Months Ended
	Mar. 31, 2019
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Loans	Loans at March 31, 2019 and September 30, 2018 consisted of the following: March 31, 2019 September 30, 2018 (In thousands) Real estate mortgage: 1-4 family residential $ 198,526 $ 195,274 Commercial 383,754 343,498 Multifamily residential 34,430 28,814 Residential construction 16,209 19,527 Commercial construction 7,966 8,669 Land and land development 11,812 10,504 Commercial business 77,591 67,786 Consumer: Home equity 24,946 24,635 Auto 14,146 11,720 Other consumer 2,915 2,918 Total Loans 772,295 713,345 Deferred loan origination fees and costs, net 300 249 Allowance for loan losses (9,934 ) (9,323 ) Loans, net $ 762,661 $ 704,271
Components of Recorded Investment in Loans for Each Portfolio Class	The following table provides the components of the recorded investment in loans as of March 31, 2019: Residential Real Estate Commercial Real Estate Multifamily Construction Land & Land Development Commercial Business Consumer Total (In thousands) Recorded Investment in Loans: Principal loan balance $ 198,526 $ 383,754 $ 34,430 $ 24,175 $ 11,812 $ 77,591 $ 42,007 $ 772,295 Accrued interest receivable 610 1,510 91 111 42 443 75 2,882 Net deferred loan origination fees and costs (87 ) 156 (38 ) (6 ) (6 ) 314 (33 ) 300 Recorded investment in loans $ 199,049 $ 385,420 $ 34,483 $ 24,280 $ 11,848 $ 78,348 $ 42,049 $ 775,477 Recorded Investment in Loans as Evaluated for Impairment: Individually evaluated for impairment $ 4,474 $ 8,725 $ - $ - $ - $ 297 $ 220 $ 13,716 Collectively evaluated for impairment 194,575 376,695 34,483 24,280 11,848 78,051 41,829 761,761 Ending balance $ 199,049 $ 385,420 $ 34,483 $ 24,280 $ 11,848 $ 78,348 $ 42,049 $ 775,477 The following table provides the components of the recorded investment in loans as of September 30, 2018: Residential Real Estate Commercial Real Estate Multifamily Construction Land & Land Development Commercial Business Consumer Total (In thousands) Recorded Investment in Loans: Principal loan balance $ 195,274 $ 343,498 $ 28,814 $ 28,196 $ 10,504 $ 67,786 $ 39,273 $ 713,345 Accrued interest receivable 589 1,403 81 156 24 365 69 2,687 Net deferred loan origination fees and costs (62 ) 104 (30 ) (5 ) (4 ) 275 (29 ) 249 Recorded investment in loans $ 195,801 $ 345,005 $ 28,865 $ 28,347 $ 10,524 $ 68,426 $ 39,313 $ 716,281 Recorded Investment in Loans as Evaluated for Impairment: Individually evaluated for impairment $ 5,107 $ 7,719 $ - $ - $ 27 $ 231 $ 243 $ 13,327 Collectively evaluated for impairment 190,694 337,286 28,865 28,347 10,497 68,195 39,070 702,954 Ending balance $ 195,801 $ 345,005 $ 28,865 $ 28,347 $ 10,524 $ 68,426 $ 39,313 $ 716,281
Allowance for Loan Losses	An analysis of the allowance for loan losses as of March 31, 2019 is as follows: Residential Real Estate Commercial Real Estate Multifamily Construction Land & Land Development Commercial Business Consumer Total (In thousands) Ending Allowance Balance Attributable to Loans: Individually evaluated for impairment $ - $ 963 $ - $ - $ - $ 70 $ 11 $ 1,044 Collectively evaluated for impairment 220 5,733 232 515 237 1,465 488 8,890 Ending balance $ 220 $ 6,696 $ 232 $ 515 $ 237 $ 1,535 $ 499 $ 9,934 An analysis of the allowance for loan losses as of September 30, 2018 is as follows: Residential Real Estate Commercial Real Estate Multifamily Construction Land & Land Development Commercial Business Consumer Total (In thousands) Ending Allowance Balance Attributable to Loans: Individually evaluated for impairment $ 7 $ 492 $ - $ - $ - $ - $ 12 $ 511 Collectively evaluated for impairment 267 6,333 195 580 210 1,041 186 8,812 Ending balance $ 274 $ 6,825 $ 195 $ 580 $ 210 $ 1,041 $ 198 $ 9,323 An analysis of the changes in the allowance for loan losses for the three months ended March 31, 2019 is as follows: Residential Real Estate Commercial Real Estate Multifamily Construction Land & Land Development Commercial Business Consumer Total (In thousands) Changes in Allowance for Loan Losses: Beginning balance $ 249 $ 6,716 $ 158 $ 693 $ 219 $ 1,288 $ 297 $ 9,620 Provisions (28 ) (20 ) 74 (178 ) 18 246 228 340 Charge-offs (9 ) - - - - - (39 ) (48 ) Recoveries 8 - - - - 1 13 22 Ending balance $ 220 $ 6,696 $ 232 $ 515 $ 237 $ 1,535 $ 499 $ 9,934 An analysis of the changes in the allowance for loan losses for the six months ended March 31, 2019 is as follows: Residential Real Estate Commercial Real Estate Multifamily Construction Land & Land Development Commercial Business Consumer Total (In thousands) Changes in Allowance for Loan Losses: Beginning balance $ 274 $ 6,825 $ 195 $ 580 $ 210 $ 1,041 $ 198 $ 9,323 Provisions (58 ) (129 ) 37 (65 ) 27 493 350 655 Charge-offs (10 ) - - - - - (81 ) (91 ) Recoveries 14 - - - - 1 32 47 Ending balance $ 220 $ 6,696 $ 232 $ 515 $ 237 $ 1,535 $ 499 $ 9,934 An analysis of the changes in the allowance for loan losses for the three months ended March 31, 2018 is as follows: Residential Real Estate Commercial Real Estate Multifamily Construction Land & Land Development Commercial Business Consumer Total (In thousands) Changes in Allowance for Loan Losses: Beginning balance $ 233 $ 6,106 $ 102 $ 903 $ 219 $ 816 $ 132 $ 8,511 Provisions 17 76 44 82 11 110 31 371 Charge-offs (11 ) - - - - - (32 ) (43 ) Recoveries 9 - - - - 1 15 25 Ending balance $ 248 $ 6,182 $ 146 $ 985 $ 230 $ 927 $ 146 $ 8,864 An analysis of the changes in the allowance for loan losses for the six months ended March 31, 2018 is as follows: Residential Real Estate Commercial Real Estate Multifamily Construction Land & Land Development Commercial Business Consumer Total (In thousands) Changes in Allowance for Loan Losses: Beginning balance $ 252 $ 5,739 $ 106 $ 810 $ 223 $ 839 $ 123 $ 8,092 Provisions (1 ) 443 40 175 7 87 82 833 Charge-offs (24 ) - - - - - (84 ) (108 ) Recoveries 21 - - - - 1 25 47 Ending balance $ 248 $ 6,182 $ 146 $ 985 $ 230 $ 927 $ 146 $ 8,864
Impaired Loans Individually Evaluated for Impairment	The following table presents impaired loans individually evaluated for impairment as of March 31, 2019 and for the three and six months ended March 31, 2019 and 2018. At March 31, 2019 Three Months Ended March 31, Six Months Ended March 31, 2019 2019 2018 2018 2019 2019 2018 2018 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (In thousands) Loans with no related allowance recorded: Residential real estate $ 4,474 $ 4,965 $ - $ 5,132 $ 29 $ 5,247 $ 35 $ 5,203 $ 63 $ 5,136 $ 71 Commercial real estate 6,261 6,445 - 6,616 80 6,941 80 6,675 162 6,610 144 Multifamily - - - - - - - - - - - Construction - - - - - - - - - - - Land and land development - - - - - 29 - 12 - 29 - Commercial business 200 209 - 277 2 361 4 283 4 291 6 Consumer 111 115 - 118 1 121 1 119 2 110 2 $ 11,046 $ 11,734 $ - $ 12,143 $ 112 $ 12,699 $ 120 $ 12,292 $ 231 $ 12,176 $ 223 Loans with an allowance recorded: Residential real estate $ - $ - $ - $ 91 $ - $ 255 $ - $ 172 $ - $ 272 $ - Commercial real estate 2,464 2,538 963 2,104 - - - 1,722 - - - Multifamily - - - - - - - - - - - Construction - - - - - - - - - - - Land and land development - - - - - - - - - - - Commercial business 97 80 70 20 - - - 11 - - - Consumer 109 109 11 153 - 129 - 164 - 124 - $ 2,670 $ 2,727 $ 1,044 $ 2,368 $ - $ 384 $ - $ 2,069 $ - $ 396 $ - Total: Residential real estate $ 4,474 $ 4,965 $ - $ 5,223 $ 29 $ 5,502 $ 35 $ 5,375 $ 63 $ 5,408 $ 71 Commercial real estate 8,725 8,983 963 8,720 80 6,941 80 8,397 162 6,610 144 Multifamily - - - - - - - - - - - Construction - - - - - - - - - - - Land and land development - - - - - 29 - 12 - 29 - Commercial business 297 289 70 297 2 361 4 294 4 291 6 Consumer 220 224 11 271 1 250 1 283 2 234 2 $ 13,716 $ 14,461 $ 1,044 $ 14,511 $ 112 $ 13,083 $ 120 $ 14,361 $ 231 $ 12,572 $ 223 The Company did not recognize any interest income using the cash receipts method during the three- and six-month periods ended March 31, 2019 and 2018. The following table presents impaired loans individually evaluated for impairment as of September 30, 2018. Recorded Investment Unpaid Principal Balance Related Allowance (In thousands) Loans with no related allowance recorded: Residential real estate $ 4,833 $ 5,285 $ - Commercial real estate 6,568 6,715 - Multifamily - - - Construction - - - Land and land development 27 28 - Commercial business 231 241 - Consumer 122 123 - $ 11,781 $ 12,392 $ - Loans with an allowance recorded: Residential real estate $ 274 $ 282 $ 7 Commercial real estate 1,151 1,293 492 Multifamily - - - Construction - - - Land and land development - - - Commercial business - - - Consumer 121 128 12 $ 1,546 $ 1,703 $ 511 Total: Residential real estate $ 5,107 $ 5,567 $ 7 Commercial real estate 7,719 8,008 492 Multifamily - - - Construction - - - Land and land development 27 28 - Commercial business 231 241 - Consumer 243 251 12 $ 13,327 $ 14,095 $ 511
Recorded Investment in Nonperforming Loans by Class of Loans	Nonperforming loans consist of nonaccrual loans and loans over 90 days past due and still accruing interest. The following table presents the recorded investment in nonperforming loans at March 31, 2019: Nonaccrual Loans Loans 90+ Days Past Due Still Accruing Total Nonperforming Loans (In thousands) Residential real estate $ 2,446 $ 141 $ 2,587 Commercial real estate 2,529 - 2,529 Multifamily - - - Construction - - - Land and land development - - - Commercial business 97 - 97 Consumer 143 15 158 Total $ 5,215 $ 156 $ 5,371 The following table presents the recorded investment in nonperforming loans at September 30, 2018: Nonaccrual Loans Loans 90+ Days Past Due Still Accruing Total Nonperforming Loans (In thousands) Residential real estate $ 2,711 $ 91 $ 2,802 Commercial real estate 1,284 - 1,284 Multifamily - - - Construction - - - Land and land development 27 - 27 Commercial business - - - Consumer 160 - 160 Total $ 4,182 $ 91 $ 4,273
Aging of Recorded Investment in Past Due Loans	The following table presents the aging of the recorded investment in past due loans at March 31, 2019: 30-59 Days Past Due 60-89 Days Past Due 90 + Days Past Due Total Past Due Current Total Loans (In thousands) Residential real estate $ 2,423 $ 71 $ 782 $ 3,276 $ 195,773 $ 199,049 Commercial real estate 843 29 2,057 2,929 382,491 385,420 Multifamily - - - - 34,483 34,483 Construction - - - - 24,280 24,280 Land and land development 39 48 - 87 11,761 11,848 Commercial business 53 - 96 149 78,199 78,348 Consumer 78 1 15 94 41,955 42,049 Total $ 3,436 $ 149 $ 2,950 $ 6,535 $ 768,942 $ 775,477 The following table presents the aging of the recorded investment in past due loans at September 30, 2018: 30-59 Days Past Due 60-89 Days Past Due 90 + Days Past Due Total Past Due Current Total Loans (In thousands) Residential real estate $ 2,088 $ 649 $ 1,202 $ 3,939 $ 191,862 $ 195,801 Commercial real estate 696 - 210 906 344,099 345,005 Multifamily - - - - 28,865 28,865 Construction - - - - 28,347 28,347 Land and land development - 27 - 27 10,497 10,524 Commercial business 7 - - 7 68,419 68,426 Consumer 43 37 32 112 39,201 39,313 Total $ 2,834 $ 713 $ 1,444 $ 4,991 $ 711,290 $ 716,281
Recorded Investment in Loans by Risk Category	As of March 31, 2019, and based on the most recent analysis performed, the recorded investment in loans by risk category was as follows: Residential Real Estate Commercial Real Estate Multifamily Construction Land and Land Development Commercial Business Consumer Total (In thousands) Pass $ 194,698 $ 375,796 $ 33,998 $ 24,280 $ 11,848 $ 75,176 $ 41,979 $ 757,775 Special Mention - 1,063 - - - 400 - 1,463 Substandard 4,285 8,561 485 - - 2,772 67 16,170 Doubtful 66 - - - - - 3 69 Loss - - - - - - - - Total $ 199,049 $ 385,420 $ 34,483 $ 24,280 $ 11,848 $ 78,348 $ 42,049 $ 775,477 As of September 30, 2018, the recorded investment in loans by risk category was as follows: Residential Real Estate Commercial Real Estate Multifamily Construction Land and Land Development Commercial Business Consumer Total (In thousands) Pass $ 190,647 $ 338,256 $ 28,365 $ 28,347 $ 10,207 $ 66,162 $ 39,246 $ 701,230 Special Mention 19 - - - 290 - - 309 Substandard 5,061 6,749 500 - 27 2,264 67 14,668 Doubtful 74 - - - - - - 74 Loss - - - - - - - - Total $ 195,801 $ 345,005 $ 28,865 $ 28,347 $ 10,524 $ 68,426 $ 39,313 $ 716,281
Recorded Investment in Troubled Debt Restructurings by Class of Loan and Accrual Status	The following table summarizes the Company’s recorded investment in TDRs at March 31, 2019 and September 30, 2018. There was no specific reserve included in the allowance for loan losses related to TDRs at March 31, 2019. There was $5,000 of specific reserve included in the allowance for loan losses related to TDRs at September 30, 2018. Accruing Nonaccrual Total (In thousands) March 31, 2019: Residential real estate $ 2,028 $ 293 $ 2,321 Commercial real estate 6,196 65 6,261 Commercial business 200 - 200 Consumer 77 - 77 Total $ 8,501 $ 358 $ 8,859 September 30, 2018: Residential real estate $ 2,396 $ 21 $ 2,417 Commercial real estate 6,435 65 6,500 Commercial business 231 - 231 Consumer 83 - 83 Total $ 9,145 $ 86 $ 9,231
Troubled Debt Restructurings	The following table summarizes information in regard to TDRs that were restructured during the three- and six-month periods ended March 31, 2018: Number of Loans Pre- Modification Principal Balance Post- Modification Principal Balance (Dollars in thousands) Three Months Ended March 31, 2018: Residential real estate 1 $ 140 $ 120 Total 1 $ 140 $ 120 Six Months Ended March 31, 2018: Residential real estate 1 $ 140 $ 120 Commercial real estate 1 1,674 1,674 Commercial business 1 170 170 Consumer 1 3 3 Total 4 $ 1,987 $ 1,967
Schedule of Servicing Assets at Fair Value	An analysis of SBA loan servicing rights for the three- and six-month periods ended March 31, 2019 and 2018 is as follows: Three Months Ended Six Months Ended March 31, March 31, (In thousands) 2019 2018 2019 2018 (In thousands) Balance, beginning of period $ 2,554 $ 1,746 $ 2,405 $ 1,389 Servicing rights resulting from transfers of loans 192 438 443 867 Amortization (151 ) (68 ) (253 ) (140 ) Change in valuation allowance - - - - Balance, end of period $ 2,595 $ 2,116 $ 2,595 $ 2,116

Deposits (Tables)

Deposits (Tables)	6 Months Ended
	Mar. 31, 2019
Debt Disclosure [Abstract]
Schedule of Deposits	Deposits at March 31, 2019 and September 30, 2018 consisted of the following: March 31, 2019 September 30, 2018 (In thousands) Noninterest-bearing demand deposits $ 162,901 $ 167,705 NOW accounts 170,454 173,543 Money market accounts 104,691 107,124 Savings accounts 121,978 120,995 Retail time deposits 136,640 123,007 Brokered time deposits 128,106 118,738 Total $ 824,770 $ 811,112

Supplemental Disclosure for E_2

Supplemental Disclosure for Earnings Per Share (Tables)	6 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Earnings Per Share Information	Earnings per share information is presented below for the three- and six-month periods ended March 31, 2019 and 2018. Three Months Ended Six Months Ended March 31, March 31, 2019 2018 2019 2018 (Dollars in thousands, except per share data) Basic: Earnings: Net income attributable to First Savings Financial Group, Inc. $ 3,533 $ 1,646 $ 6,464 $ 5,052 Shares: Weighted average common shares outstanding, basic 2,307,155 2,251,425 2,295,788 2,239,823 Net income per common share, basic $ 1.53 $ 0.73 $ 2.82 $ 2.26 Diluted: Earnings: Net income attributable to First Savings Financial Group, Inc. $ 3,533 $ 1,646 $ 6,464 $ 5,052 Shares: Weighted average common shares outstanding, basic 2,307,155 2,251,425 2,295,788 2,239,823 Add: Dilutive effect of outstanding options 50,205 113,176 65,650 117,518 Add: Dilutive effect of restricted stock 2,644 5,659 5,086 6,265 Weighted average common shares outstanding, as adjusted 2,360,004 2,370,260 2,366,524 2,363,606 Net income per common share, diluted $ 1.50 $ 0.69 $ 2.73 $ 2.14

Supplemental Disclosures of C_2

Supplemental Disclosures of Cash Flow Information (Tables)	6 Months Ended
	Mar. 31, 2019
Supplemental Cash Flow Elements [Abstract]
Supplemental Disclosures of Cash Flow Information	Six Months Ended March 31, 2019 2018 ( In thousands ) Cash payments for: Interest $ 4,095 $ 2,766 Income taxes (net of refunds received) 337 1,214 Noncash investing activities: Transfers from loans held for sale to loans - 560 Transfers from loans to foreclosed real estate 224 - Proceeds from sales of foreclosed real estate financed through loans 47 427 Noncash exercise of stock options 542 387 Transfers from premises and equipment to other real estate owned 1,838 -

Fair Value Measurements and D_2

Fair Value Measurements and Disclosures about Fair Value of Financial Instruments (Tables)	6 Months Ended
	Mar. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets Measured at Fair Value on Recurring and Nonrecurring Basis	The tables below present the balances of financial assets and liabilities measured at fair value on a recurring and nonrecurring basis as of March 31, 2019 and September 30, 2018. The Company had no liabilities measured at fair value as of September 30, 2018. Carrying Value Level 1 Level 2 Level 3 Total (In thousands) March 31, 2019: Assets Measured - Recurring Basis: Securities available for sale: Agency mortgage-backed $ - $ 23,493 $ - $ 23,493 Agency CMO - 11,630 - 11,630 Privately-issued CMO - 1,433 - 1,433 Privately-issued ABS - 1,383 - 1,383 SBA certificates - 1,233 - 1,233 Municipal - 151,910 - 151,910 Total securities available for sale $ - $ 191,082 $ - $ 191,082 Residential mortgage loans held for sale – fair value option elected $ - $ 25,017 $ - $ 25,017 Derivative assets (included in other assets) $ - $ - $ 1,705 $ 1,705 Liabilities Measured – Recurring Basis: Derivative liabilities (included in other liabilities) $ - $ 384 $ - $ 384 Assets Measured - Nonrecurring Basis: Impaired loans: Residential real estate $ - $ - $ 4,474 $ 4,474 Commercial real estate - - 7,762 7,762 Commercial business - - 227 227 Consumer - - 209 209 Total impaired loans $ - $ - $ 12,672 $ 12,672 SBA loans held for sale $ - $ - $ 23,786 $ 23,786 Loan servicing rights $ - $ - $ 2,595 $ 2,595 Other real estate owned, held for sale: Residential real estate $ - $ - $ 79 $ 79 Former bank premises - - 1,838 1,838 Total other real estate owned $ - $ - $ 1,917 $ 1,917 Carrying Value Level 1 Level 2 Level 3 Total (In thousands) September 30, 2018: Assets Measured - Recurring Basis: Securities available for sale: Agency mortgage-backed $ - $ 31,130 $ - $ 31,130 Agency CMO - 10,441 - 10,441 Privately-issued CMO - 1,579 - 1,579 Privately-issued ABS - 1,884 - 1,884 SBA certificates - 1,351 - 1,351 Municipal - 137,988 - 137,988 Total securities available for sale $ - $ 184,373 $ - $ 184,373 Residential mortgage loans held for sale – fair value option elected $ - $ 9,952 $ - $ 9,952 Derivative assets (included in other assets) $ - $ 41 $ 380 $ 421 Assets Measured - Nonrecurring Basis: Impaired loans: Residential real estate $ - $ - $ 5,100 $ 5,100 Commercial real estate - - 7,227 7,227 Land and land development - - 27 27 Commercial business - - 231 231 Consumer - - 231 231 Total impaired loans $ - $ - $ 12,816 $ 12,816 Residential mortgage loans held for sale – fair value option not elected $ - $ 514 $ - $ 514 SBA loans held for sale $ - $ 21,659 $ - $ 21,659 Loan servicing rights $ - $ - $ 2,405 $ 2,405 Other real estate owned, held for sale: Residential real estate $ - $ - $ 103 $ 103 Total other real estate owned $ - $ - $ 103 $ 103
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation	The table below presents a reconciliation of derivative assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three- and six-months ended March 31, 2019 and 2018: Three Months Ended Six Months Ended March 31, March 31, (In thousands) 2019 2018 2019 2018 Beginning balance $ 658 $ - $ 380 $ - Unrealized gains recognized in earnings 1,047 - 1,325 - Ending balance $ 1,705 $ - $ 1,705 $ -
Fair Value Measurement Inputs and Valuation Techniques	The table below presents information about significant unobservable inputs (Level 3) used in the valuation of assets measured at fair value on a recurring basis as of March 31, 2019 and September 30, 2018. Financial Instrument Significant Unobservable Inputs Range of Inputs March 31, 2019 Range of Inputs September 30, 2018 Interest rate lock commitments Pull-through rate 69 97 72 95 Direct costs to close 1 1 3
Fair Value, by Balance Sheet Grouping	The table below presents the difference between the aggregate fair value and the aggregate remaining principal balance for residential mortgage loans held for sale for which the fair value option had been elected as of March 31, 2019 and September 30, 2018. (In thousands) Aggregate Fair Value March 31, 2019 Aggregate Principal Balance March 31, 2019 Difference Residential mortgage loans held for sale $ 25,017 $ 23,959 $ 1,058 (In thousands) Aggregate Fair Value September 30, 2018 Aggregate Principal Balance September 30, 2018 Difference Residential mortgage loans held for sale $ 9,952 $ 9,695 $ 257
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings	The table below presents gains and losses and interest included in earnings related to financial assets measured at fair value under the fair value option for the three- and six-month periods ended March 31, 2019 and 2018: Three Months Ended Six Months Ended March 31, March 31, (In thousands) 2019 2018 2019 2018 Gains – included in mortgage banking income $ 437 $ - $ 1,026 $ - Interest income 187 - 341 - $ 624 $ - $ 1,367 $ -
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments	The fair value of loans at September 30, 2018 was measured using an entry price notion. Carrying Fair Value Measurements Using: Amount Level 1 Level 2 Level 3 (In thousands) March 31, 2019: Financial assets: Cash and due from banks $ 11,617 $ 11,617 $ - $ - Interest-bearing deposits with banks 28,825 28,825 - - Interest-bearing time deposits 2,963 - 2,958 - Securities available for sale 191,082 - 191,082 - Securities held to maturity 2,465 - 2,861 - Loans, net 762,661 - - 727,442 Residential mortgage loans held for sale 25,017 - 25,017 - SBA loans held for sale 23,786 - - 26,407 FRB and FHLB stock 10,196 N/A N/A N/A Accrued interest receivable 4,602 - 4,602 - Loan servicing rights (included in other assets) 2,595 - - 2,595 Derivative assets (included in other assets) 1,705 - - 1,705 Financial liabilities: Deposits 824,770 - - 824,193 Short-term repurchase agreements 1,353 - 1,353 - Borrowings from FHLB 160,938 - 155,264 - Subordinated note 19,695 - 19,695 - Accrued interest payable 1,325 - 1,325 - Advance payments by borrowers for taxes and insurance 1,274 - 1,274 - Derivative liabilities (included in other liabilities) 384 - 384 - Carrying Fair Value Measurements Using: Amount Level 1 Level 2 Level 3 (In thousands) September 30, 2018: Financial assets: Cash and due from banks $ 14,191 $ 14,191 $ - $ - Interest-bearing deposits with banks 28,083 28,083 - - Interest-bearing time deposits 2,501 - 2,494 - Securities available for sale 184,373 - 184,373 - Securities held to maturity 2,607 - 2,896 - Residential mortgage loans held for sale 10,466 - 10,476 - SBA loans held for sale 21,659 - 23,488 - Loans, net 704,271 - - 673,652 FRB and FHLB stock 9,621 N/A N/A N/A Accrued interest receivable 4,287 - 4,287 - Loan servicing rights (included in other assets) 2,405 - - 2,405 Derivative assets (included in other assets) 421 - 41 380 Financial liabilities: Deposits 811,112 - - 809,305 Short-term repurchase agreements 1,352 - 1,352 - Borrowings from FHLB 90,000 - 84,175 - Subordinated note 19,661 - 19,661 - Accrued interest payable 743 - 743 - Advance payments by borrowers for taxes and insurance 1,218 - 1,218 -

Stock Based Compensation Plans

Stock Based Compensation Plans (Tables)	6 Months Ended
	Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based Payment Award, Stock Options, Valuation Assumptions	The fair value of options granted during the six-month period ended March 31, 2019 was determined using the following assumptions: Expected dividend yield 1.75 % Risk-free interest rate 2.13 % Expected volatility 14.6 % Expected life of options 7.5 years Weighted average fair value at grant date $ 6.13
Stock Option Activity	A summary of stock option activity as of March 31, 2019, and changes during the six-month period then ended is presented below. Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (Dollars in thousands, except per share data) Outstanding at beginning of period 150,033 $ 24.88 Granted 2,400 59.23 Exercised (61,484 ) 14.30 Forfeited or expired (750 ) 40.09 Outstanding at end of period 90,199 $ 32.88 5.4 $ 2,001 Vested and expected to vest 90,199 $ 32.88 5.4 $ 2,001 Exercisable at end of period 50,872 $ 22.90 3.4 $ 1,586
Nonvested Restricted Shares Activity	A summary of the Company’s nonvested restricted shares activity as of March 31, 2019 and changes during the six-month period then ended is presented below. Weighted Number Average of Grant Date Shares Fair Value Nonvested at October 1, 2018 14,812 $ 41.20 Granted 2,500 $ 59.23 Vested (3,653 ) $ 40.99 Forfeited (201 ) $ 40.09 Nonvested at March 31, 2019 13,458 $ 44.62

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	6 Months Ended
	Mar. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	The tables below provide information on the Company’s derivative financial instruments as of March 31, 2019 and September 30, 2018. (In thousands) Notional Amount March 31, 2019 Asset Derivatives March 31, 2019 Liability Derivatives March 31, 2019 Interest rate lock commitments $ 89,782 $ 1,705 $ - Forward mortgage loan sale contracts 63,500 - 384 $ 153,282 $ 1,705 $ 384 (In thousands) Notional Amount September 30, 2018 Asset Derivatives September 30, 2018 Liability Derivatives September 30, 2018 Interest rate lock commitments $ 16,634 $ 380 $ - Forward mortgage loan sale contracts 13,750 41 - $ 30,384 $ 421 $ -
Derivative Instruments, Gain (Loss)	Income (loss) related to derivative financial instruments included in mortgage banking income in the accompanying consolidated statements of income for the three- and six-month periods ended March 31, 2019 and 2018 is as follows: Three Months Ended Six Months Ended March 31, March 31, (In thousands) 2019 2018 2019 2018 Interest rate lock commitments $ 1,047 $ - $ 1,325 $ - Forward mortgage loan sale contracts (624 ) - (775 ) - $ 423 $ - $ 550 $ -

Regulatory Capital (Tables)

Regulatory Capital (Tables)	6 Months Ended
	Mar. 31, 2019
Banking and Thrift [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]	The Company’s and Bank’s actual capital amounts and ratios are also presented in the table. No amount was deducted from capital for interest-rate risk at either period. Minimum To Be Well Minimum Capitalized Under For Capital Prompt Corrective Actual Adequacy Purposes: Action Provisions: Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) As of March 31, 2019: Total capital (to risk-weighted assets): Consolidated $ 121,718 14.12 % $ 68,978 8.00 % N/A N/A Bank 111,468 12.95 68,854 8.00 $ 86,068 10.00 % Tier 1 capital (to risk-weighted assets): Consolidated $ 92,089 10.68 % $ 51,733 6.00 % N/A N/A Bank 101,534 11.80 51,641 6.00 $ 68,854 8.00 % Common equity tier 1 capital (to risk-weighted assets): Consolidated $ 92,089 10.68 % $ 38,800 4.50 % N/A N/A Bank 101,534 11.80 38,730 4.50 $ 55,944 6.50 % Tier 1 capital (to average adjusted total assets): Consolidated $ 92,089 8.42 % $ 43,751 4.00 % N/A N/A Bank 101,534 9.31 43,623 4.00 $ 54,529 5.00 % As of September 30, 2018: Total capital (to risk-weighted assets): Consolidated $ 114,911 14.50 % $ 63,402 8.00 % N/A N/A Bank 102,281 12.92 63,312 8.00 $ 79,140 10.00 % Tier 1 capital (to risk-weighted assets): Consolidated $ 85,927 10.84 % $ 47,551 6.00 % N/A N/A Bank 92,958 11.75 47,484 6.00 $ 63,312 8.00 % Common equity tier 1 capital (to risk-weighted assets): Consolidated $ 85,927 10.84 % $ 35,663 4.50 % N/A N/A Bank 92,958 11.75 35,613 4.50 $ 51,441 6.50 % Tier 1 capital (to average adjusted total assets): Consolidated $ 85,927 8.39 % $ 40,982 4.00 % N/A N/A Bank 92,958 9.10 40,840 4.00 $ 51,050 5.00 %

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Mar. 31, 2019
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The following segment financial information has been derived from the internal financial statements of the Company which are used by management to monitor and manage financial performance. The accounting policies of the three segments are the same as those of the Company. The amounts reflected in the “Other” column in the below tables represent combined balances of the Company and the Captive, and are the primary differences between the sum of the segment amounts and consolidated totals, along with amounts to eliminate transactions between segments. Core Banking SBA Lending Mortgage Banking Other Consolidated Totals (In thousands) Three Months Ended March 31, 2019: Net interest income $ 9,043 $ 934 $ 187 $ (309 ) $ 9,861 Net gains on sales of loans, SBA - 521 - - 521 Mortgage banking income 3 - 5,071 - 5,074 Noncash items: Provision for loan losses (492 ) 832 - - 340 Depreciation and amortization 323 12 23 18 376 Income tax expense (benefit) 694 (70 ) 176 (334 ) 466 Segment profit (loss) 3,185 (477 ) 528 28 3,264 Segment assets at March 31, 2019 1,093,766 80,521 27,346 (71,911 ) 1,129,722 Core Banking SBA Lending Mortgage Banking Other Consolidated Totals (In thousands) Six Months Ended March 31, 2019: Net interest income $ 17,863 $ 1,842 $ 341 $ (609 ) $ 19,437 Net gains on sales of loans, SBA - 1,485 - - 1,485 Mortgage banking income 30 - 8,333 - 8,363 Noncash items: Provision for loan losses (508 ) 1,163 - - 655 Depreciation and amortization 759 24 43 34 860 Income tax expense (benefit) 1,319 (25 ) 163 (469 ) 988 Segment profit 6,165 (170 ) 491 (118 ) 6,368 Segment assets at March 31, 2019 1,093,766 80,521 27,346 (71,911 ) 1,129,722 Core Banking SBA Lending Mortgage Banking Other Consolidated Totals (In thousands) Three Months Ended March 31, 2018: Net interest income $ 7,975 $ 741 $ - $ 7 $ 8,723 Net gains on sales of loans, SBA - 1,488 - - 1,488 Mortgage banking income 53 - - - 53 Noncash items: Provision for loan losses 256 115 - 371 Depreciation and amortization 321 13 - - 334 Income tax expense (benefit) 323 171 - (156 ) 338 Segment profit (loss) 1,230 1,004 - (12 ) 2,222 Segment assets at March 31, 2018 1,001,206 58,690 - (51,342 ) 1,008,554 Core Banking SBA Lending Mortgage Banking Other Consolidated Totals (In thousands) Six Months Ended March 31, 2018: Net interest income $ 15,494 $ 1,268 $ - $ 14 $ 16,776 Net gains on sales of loans, SBA - 3,027 - - 3,027 Mortgage banking income 168 - - - 168 Noncash items: Provision for loan losses (138 ) 971 - - 833 Depreciation and amortization 608 26 - - 634 Income tax expense (benefit) 978 203 - (221 ) 960 Segment profit 4,417 1,190 - 108 5,715 Segment assets at March 31, 2018 1,001,206 58,690 (51,342 ) 1,008,554

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	6 Months Ended
	Mar. 31, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	All of the Company’s revenue from contracts with customers within the scope of FASB ASC 606 is recognized within noninterest income. The following table presents the Company’s sources of noninterest income for the three- and six-month periods ended March 31, 2019 and 2018: Three Months Ended Six Months Ended March 31, March 31, 2019 2018 2019 2018 (In thousands) Service charges on deposit accounts $ 449 $ 399 $ 960 $ 776 ATM and interchange fees 446 299 899 662 Investment advisory income 77 98 134 226 Other 43 30 80 66 Revenue from contracts with customers 1,015 826 2,073 1,730 Gain (loss) on sale of securities 1 (59 ) 1 91 Gain on sale of SBA loans 521 1,488 1,485 3,027 Mortgage banking income 5,074 53 8,363 168 Increase in cash value of life insurance 147 106 258 213 Real estate lease income 157 1 315 1 Other 174 152 375 243 Other noninterest income 6,074 1,741 10,797 3,743 Total noninterest income $ 7,089 $ 2,567 $ 12,870 $ 5,473

Presentation of Interim Infor_2

Presentation of Interim Information (Additional Information) (Detail) $ in Millions	6 Months Ended
	Mar. 31, 2019USD ($)
Schedule of Equity Method Investments [Line Items]
Cumulative Allocated Net Income	$ 1.7
Business Capital LLC [Member]
Schedule of Equity Method Investments [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	49.00%
subsidiary [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	51.00%

Acquisition of Dearmin Bancor_3

Acquisition of Dearmin Bancorp and The First National Bank of Odon (Estimated Fair Values Of The Assets Acquired And Liabilities Assumed) (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Goodwill arising in the acquisition	$ 9,848	$ 9,848
Dearmin Bancorp and The First National Bank of Odon [Member]
Cash and due from banks	1,310
Interest-bearing deposits with banks	15,957
Interest-bearing time deposits with banks	3,817
Investment securities	39,978
Loans, net	34,467
Premises and equipment	1,125
Goodwill arising in the acquisition	1,912
Core deposit intangible	1,487
Other assets	2,890
Total assets acquired	102,943
Deposit accounts	91,765
Net deferred tax liabilities	205
Other liabilities	373
Total liabilities assumed	92,343
Total consideration	$ 10,600

Acquisition of Dearmin Bancor_4

Acquisition of Dearmin Bancorp and The First National Bank of Odon (Additional Information) (Detail) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Mar. 31, 2019	Sep. 30, 2018
Goodwill	$ 9,848	$ 9,848
Business Combination, Acquisition Related Costs		$ 1,300
Dearmin Bancorp and The First National Bank of Odon [Member]
Payments to Acquire Businesses, Gross	10,600
Goodwill	1,912
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 1,500
Finite-Lived Intangible Asset, Useful Life	9 years 1 month 6 days
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Loans	$ 34,500
Gross Contractual Amounts Receivable at Date of Acquisition	$ 41,500
Business Acquisition, Share Price	$ 265

Investment Securities (Amortize

Investment Securities (Amortized Cost And Fair Value Of Securities) (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Schedule of Cost method Investment [Line Items]
Available-for-Sale, Amortized Cost	$ 185,827	$ 183,861
Available-for-Sale, Gross Unrealized Gain	5,797	2,826
Available-for-Sale, Gross Unrealized Losses	542	2,314
Available-for-Sale, Fair Value	191,082	184,373
Held-to-Maturity, Amortized Cost	2,465	2,607
Held-to-Maturity, Gross Unrealized Gain	396	289
Held-to-Maturity, Gross Unrealized Losses	0	0
Held-to-Maturity, Fair Value	2,861	2,896
Agency mortgage-backed
Schedule of Cost method Investment [Line Items]
Available-for-Sale, Amortized Cost	23,529	31,686
Available-for-Sale, Gross Unrealized Gain	179	90
Available-for-Sale, Gross Unrealized Losses	215	646
Available-for-Sale, Fair Value	23,493	31,130
Held-to-Maturity, Amortized Cost	125	134
Held-to-Maturity, Gross Unrealized Gain	7	8
Held-to-Maturity, Gross Unrealized Losses	0	0
Held-to-Maturity, Fair Value	132	142
Agency CMO
Schedule of Cost method Investment [Line Items]
Available-for-Sale, Amortized Cost	11,709	10,754
Available-for-Sale, Gross Unrealized Gain	42	0
Available-for-Sale, Gross Unrealized Losses	121	313
Available-for-Sale, Fair Value	11,630	10,441
Privately-issued CMO
Schedule of Cost method Investment [Line Items]
Available-for-Sale, Amortized Cost	1,314	1,434
Available-for-Sale, Gross Unrealized Gain	122	148
Available-for-Sale, Gross Unrealized Losses	3	3
Available-for-Sale, Fair Value	1,433	1,579
Privately-issued ABS
Schedule of Cost method Investment [Line Items]
Available-for-Sale, Amortized Cost	1,128	1,538
Available-for-Sale, Gross Unrealized Gain	255	346
Available-for-Sale, Gross Unrealized Losses	0	0
Available-for-Sale, Fair Value	1,383	1,884
SBA certificates
Schedule of Cost method Investment [Line Items]
Available-for-Sale, Amortized Cost	1,196	1,305
Available-for-Sale, Gross Unrealized Gain	42	53
Available-for-Sale, Gross Unrealized Losses	5	7
Available-for-Sale, Fair Value	1,233	1,351
Municipal bonds
Schedule of Cost method Investment [Line Items]
Available-for-Sale, Amortized Cost	146,951	137,144
Available-for-Sale, Gross Unrealized Gain	5,157	2,189
Available-for-Sale, Gross Unrealized Losses	198	1,345
Available-for-Sale, Fair Value	151,910	137,988
Held-to-Maturity, Amortized Cost	2,340	2,473
Held-to-Maturity, Gross Unrealized Gain	389	281
Held-to-Maturity, Gross Unrealized Losses	0	0
Held-to-Maturity, Fair Value	$ 2,729	$ 2,754

Investment Securities (Amorti_2

Investment Securities (Amortized Cost And Fair Value Of Investment Securities By Contractual Maturity) (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Schedule of Available-for-sale Securities [Line Items]
Available for Sale, Amortized Cost, Due within one year	$ 2,957
Available for Sale, Amortized Cost, Due after one year through five years	20,501
Available for Sale, Amortized Cost, Due after five years through ten years	30,716
Available for Sale, Amortized Cost, Due after ten years	92,777
Available for Sale, Amortized Cost	185,827	$ 183,861
Available for Sale, Fair Value, Due within one year	2,975
Available for Sale, Fair Value, Due after one year through five years	21,072
Available for Sale, Fair Value, Due after five years through ten years	31,876
Available for Sale, Fair Value, Due after ten years	95,987
Available for sale, Fair Value	191,082	184,373
Held to Maturity, Amortized Cost, Due within one year	245
Held to Maturity, Amortized Cost, Due after one year through five years	990
Held to Maturity, Amortized Cost, Due after five years through ten years	840
Held to Maturity, Amortized Cost, Due after ten years	265
Held to Maturity, Amortized Cost	2,465	2,607
Held to Maturity, Fair Value, Due within one year	284
Held to Maturity, Fair Value, Due after one year through five years	1,152
Held to Maturity, Fair Value, Due after five years through ten years	984
Held to Maturity, Fair Value, Due after ten years	309
Held to Maturity, Fair Value	2,861	$ 2,896
CMO
Schedule of Available-for-sale Securities [Line Items]
Available for Sale, Amortized Cost	13,023
Available for sale, Fair Value	13,063
Held to Maturity, Amortized Cost	0
Held to Maturity, Fair Value	0
ABS
Schedule of Available-for-sale Securities [Line Items]
Available for Sale, Amortized Cost	1,128
Available for sale, Fair Value	1,383
Held to Maturity, Amortized Cost	0
Held to Maturity, Fair Value	0
SBA certificates
Schedule of Available-for-sale Securities [Line Items]
Available for Sale, Amortized Cost	1,196
Available for sale, Fair Value	1,233
Held to Maturity, Amortized Cost	0
Held to Maturity, Fair Value	0
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Available for Sale, Amortized Cost	23,529
Available for sale, Fair Value	23,493
Held to Maturity, Amortized Cost	125
Held to Maturity, Fair Value	$ 132

Investment Securities (Availabl

Investment Securities (Available For Sale Securities With Gross Unrealized Losses By Investment Category And Length Of Time Individual Securities Have Been In Continuous Loss Position) (Detail) Number in Thousands, $ in Thousands	Mar. 31, 2019USD ($)Number	Sep. 30, 2018USD ($)Number
Investments, Unrealized Loss Position [Line Items]
Securities available for sale, Continuous loss position less than twelve months, Number of Investment Positions | Number	2	112
Securities available for sale, Continuous loss position more than twelve months, Number of Investment Positions | Number	56	30
Securities available for sale, Number of Investment Positions | Number	58	142
Securities available for sale, Continuous loss position less than twelve months, Fair Value	$ 2,309	$ 61,536
Securities available for sale, Continuous loss position more than twelve months, Fair Value	32,979	23,924
Securities available for sale, Continuous loss position	35,288	85,460
Securities available for sale, Continuous loss position less than twelve months, Gross Unrealized Losses	1	1,311
Securities available for sale, Continuous loss position more than twelve months, Gross Unrealized Losses	541	1,003
Securities available for sale, Continuous loss position, Gross Unrealized Losses	$ 542	$ 2,314
Agency Mortgage-Backed
Investments, Unrealized Loss Position [Line Items]
Securities available for sale, Continuous loss position less than twelve months, Number of Investment Positions | Number	2	15
Securities available for sale, Continuous loss position more than twelve months, Number of Investment Positions | Number	19	11
Securities available for sale, Continuous loss position less than twelve months, Fair Value	$ 2,309	$ 14,814
Securities available for sale, Continuous loss position more than twelve months, Fair Value	12,542	9,283
Securities available for sale, Continuous loss position less than twelve months, Gross Unrealized Losses	1	313
Securities available for sale, Continuous loss position more than twelve months, Gross Unrealized Losses	$ 214	$ 333
Agency CMO
Investments, Unrealized Loss Position [Line Items]
Securities available for sale, Continuous loss position less than twelve months, Number of Investment Positions | Number	12	9
Securities available for sale, Continuous loss position more than twelve months, Number of Investment Positions | Number	4
Securities available for sale, Continuous loss position less than twelve months, Fair Value	$ 8,569	$ 7,881
Securities available for sale, Continuous loss position more than twelve months, Fair Value	2,560
Securities available for sale, Continuous loss position less than twelve months, Gross Unrealized Losses	121	$ 259
Securities available for sale, Continuous loss position more than twelve months, Gross Unrealized Losses	$ 54
Municipal bonds
Investments, Unrealized Loss Position [Line Items]
Securities available for sale, Continuous loss position less than twelve months, Number of Investment Positions | Number	23	8
Securities available for sale, Continuous loss position more than twelve months, Number of Investment Positions | Number	93
Securities available for sale, Continuous loss position less than twelve months, Fair Value	$ 11,312	$ 6,106
Securities available for sale, Continuous loss position more than twelve months, Fair Value	44,162
Securities available for sale, Continuous loss position less than twelve months, Gross Unrealized Losses	198	$ 401
Securities available for sale, Continuous loss position more than twelve months, Gross Unrealized Losses	$ 944
Privately-issued CMO
Investments, Unrealized Loss Position [Line Items]
Securities available for sale, Continuous loss position more than twelve months, Number of Investment Positions | Number	1	1
Securities available for sale, Continuous loss position more than twelve months, Fair Value	$ 37	$ 37
Securities available for sale, Continuous loss position more than twelve months, Gross Unrealized Losses	$ 3	$ 3
SBA certificates
Investments, Unrealized Loss Position [Line Items]
Securities available for sale, Continuous loss position more than twelve months, Number of Investment Positions | Number	1	1
Securities available for sale, Continuous loss position more than twelve months, Fair Value	$ 519	$ 617
Securities available for sale, Continuous loss position more than twelve months, Gross Unrealized Losses	$ 5	$ 7

Investment Securities (Addition

Investment Securities (Additional Information) (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Net gain (loss) on trading account securities	$ 0	$ (59,000)	$ 0	$ 91,000
Investments, Fair Value Disclosure	37,000		37,000
Unrealized Gain (Loss) on Securities			3,000
Trading Securities, Realized Gain (Loss)	0	(59,000)	0	91,000
Available-for-sale Securities, Gross Realized Gain (Loss)	$ 1,000	$ 0	$ 1,000	$ 0
Two Privately Issued Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale debt securities in loss position, depreciation percentage	8.25%		8.25%
Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale debt securities in loss position, depreciation percentage	98.49%		98.49%
Debt Securities [Member] | Downgraded Due To Potential Credit Losses [Member]
Schedule of Available-for-sale Securities [Line Items]
Carrying Value Of Downgraded Due To Potential Credit Losses	$ 1,200,000		$ 1,200,000
Debt Securities [Member] | Downgraded Privately Issued CMOs [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Market Value Of Downgraded Privately Issued Collateralized Mortgage Obligations	$ 1,400,000		$ 1,400,000

Loans and Allowance for Loan _3

Loans and Allowance for Loan Losses (Loans) (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 772,295	$ 713,345
Deferred loan origination fees and costs, net	300	249
Allowance for loan losses	(9,934)	(9,323)
Loans, net	762,661	704,271
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Deferred loan origination fees and costs, net	156	104
Multifamily residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Deferred loan origination fees and costs, net	(38)	(30)
Land and land development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Deferred loan origination fees and costs, net	(6)	(4)
Commercial business [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Deferred loan origination fees and costs, net	314	275
Real estate mortgage [Member] | 1-4 family residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	198,526	195,274
Real estate mortgage [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	383,754	343,498
Real estate mortgage [Member] | Multifamily residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	34,430	28,814
Real estate mortgage [Member] | Residential construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	16,209	19,527
Real estate mortgage [Member] | Commercial construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	7,966	8,669
Real estate mortgage [Member] | Land and land development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	11,812	10,504
Real estate mortgage [Member] | Commercial business [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	77,591	67,786
Consumer [Member] | Home equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	24,946	24,635
Consumer [Member] | Auto [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	14,146	11,720
Consumer [Member] | Other consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 2,915	$ 2,918

Loans and Allowance for Loan _4

Loans and Allowance for Loan Losses (Components Of Recorded Investment In Loans For Each Portfolio Class) (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Recorded Investment in Loans:
Principal loan balance	$ 772,295	$ 713,345
Accrued interest receivable	2,882	2,687
Net deferred loan origination fees and costs	300	249
Recorded investment in loans	775,477	716,281
Recorded Investment in Loans as Evaluated for Impairment:
Individually evaluated for impairment	13,716	13,327
Collectively evaluated for impairment	761,761	702,954
Ending balance	775,477	716,281
Residential Real Estate [Member]
Recorded Investment in Loans:
Principal loan balance	198,526	195,274
Accrued interest receivable	610	589
Net deferred loan origination fees and costs	(87)	(62)
Recorded investment in loans	199,049	195,801
Recorded Investment in Loans as Evaluated for Impairment:
Individually evaluated for impairment	4,474	5,107
Collectively evaluated for impairment	194,575	190,694
Ending balance	199,049	195,801
Commercial Real Estate [Member]
Recorded Investment in Loans:
Principal loan balance	383,754	343,498
Accrued interest receivable	1,510	1,403
Net deferred loan origination fees and costs	156	104
Recorded investment in loans	385,420	345,005
Recorded Investment in Loans as Evaluated for Impairment:
Individually evaluated for impairment	8,725	7,719
Collectively evaluated for impairment	376,695	337,286
Ending balance	385,420	345,005
Multifamily [Member]
Recorded Investment in Loans:
Principal loan balance	34,430	28,814
Accrued interest receivable	91	81
Net deferred loan origination fees and costs	(38)	(30)
Recorded investment in loans	34,483	28,865
Recorded Investment in Loans as Evaluated for Impairment:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	34,483	28,865
Ending balance	34,483	28,865
Construction [Member]
Recorded Investment in Loans:
Principal loan balance	24,175	28,196
Accrued interest receivable	111	156
Net deferred loan origination fees and costs	(6)	(5)
Recorded investment in loans	24,280	28,347
Recorded Investment in Loans as Evaluated for Impairment:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	24,280	28,347
Ending balance	24,280	28,347
Land and Land development [Member]
Recorded Investment in Loans:
Principal loan balance	11,812	10,504
Accrued interest receivable	42	24
Net deferred loan origination fees and costs	(6)	(4)
Recorded investment in loans	11,848	10,524
Recorded Investment in Loans as Evaluated for Impairment:
Individually evaluated for impairment	0	27
Collectively evaluated for impairment	11,848	10,497
Ending balance	11,848	10,524
Commercial Business [Member]
Recorded Investment in Loans:
Principal loan balance	77,591	67,786
Accrued interest receivable	443	365
Net deferred loan origination fees and costs	314	275
Recorded investment in loans	78,348	68,426
Recorded Investment in Loans as Evaluated for Impairment:
Individually evaluated for impairment	297	231
Collectively evaluated for impairment	78,051	68,195
Ending balance	78,348	68,426
Consumer [Member]
Recorded Investment in Loans:
Principal loan balance	42,007	39,273
Accrued interest receivable	75	69
Net deferred loan origination fees and costs	(33)	(29)
Recorded investment in loans	42,049	39,313
Recorded Investment in Loans as Evaluated for Impairment:
Individually evaluated for impairment	220	243
Collectively evaluated for impairment	41,829	39,070
Ending balance	$ 42,049	$ 39,313

Loans and Allowance for Loan _5

Loans and Allowance for Loan Losses (Allowance For Loan Losses) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Sep. 30, 2018
Changes in Allowance for Loan Losses:
Beginning balance	$ 9,620	$ 8,511	$ 9,323	$ 8,092
Provisions	340	371	655	833
Charge-offs	(48)	(43)	(91)	(108)
Recoveries	22	25	47	47
Ending balance	9,934	8,864	9,934	8,864
Ending Allowance Balance Attributable to Loans:
Individually evaluated for impairment					$ 1,044	$ 511
Collectively evaluated for impairment					8,890	8,812
Ending balance	9,620	8,511	9,323	8,864	9,934	9,323
Residential Real Estate [Member]
Changes in Allowance for Loan Losses:
Beginning balance	249	233	274	252
Provisions	(28)	17	(58)	(1)
Charge-offs	(9)	(11)	(10)	(24)
Recoveries	8	9	14	21
Ending balance	220	248	220	248
Ending Allowance Balance Attributable to Loans:
Individually evaluated for impairment					0	7
Collectively evaluated for impairment					220	267
Ending balance	220	233	220	248	220	274
Commercial Real Estate [Member]
Changes in Allowance for Loan Losses:
Beginning balance	6,716	6,106	6,825	5,739
Provisions	(20)	76	(129)	443
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	6,696	6,182	6,696	6,182
Ending Allowance Balance Attributable to Loans:
Individually evaluated for impairment					963	492
Collectively evaluated for impairment					5,733	6,333
Ending balance	6,696	6,106	6,696	6,182	6,696	6,825
Multifamily [Member]
Changes in Allowance for Loan Losses:
Beginning balance	158	102	195	106
Provisions	74	44	37	40
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	232	146	232	146
Ending Allowance Balance Attributable to Loans:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					232	195
Ending balance	232	102	232	146	232	195
Construction [Member]
Changes in Allowance for Loan Losses:
Beginning balance	693	903	580	810
Provisions	(178)	82	(65)	175
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	515	985	515	985
Ending Allowance Balance Attributable to Loans:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					515	580
Ending balance	515	903	515	985	515	580
Land and Land Development [Member]
Changes in Allowance for Loan Losses:
Beginning balance	219	219	210	223
Provisions	18	11	27	7
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	237	230	237	230
Ending Allowance Balance Attributable to Loans:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					237	210
Ending balance	237	219	237	230	237	210
Commercial Business [Member]
Changes in Allowance for Loan Losses:
Beginning balance	1,288	816	1,041	839
Provisions	246	110	493	87
Charge-offs	0	0	0	0
Recoveries	1	1	1	1
Ending balance	1,535	927	1,535	927
Ending Allowance Balance Attributable to Loans:
Individually evaluated for impairment					70	0
Collectively evaluated for impairment					1,465	1,041
Ending balance	1,535	816	1,535	927	1,535	1,041
Consumer [Member]
Changes in Allowance for Loan Losses:
Beginning balance	297	132	198	123
Provisions	228	31	350	82
Charge-offs	(39)	(32)	(81)	(84)
Recoveries	13	15	32	25
Ending balance	499	146	499	146
Ending Allowance Balance Attributable to Loans:
Individually evaluated for impairment					11	12
Collectively evaluated for impairment					488	186
Ending balance	$ 297	$ 132	$ 198	$ 146	$ 499	$ 198

Loans and Allowance for Loan _6

Loans and Allowance for Loan Losses (Impaired Loans Individually Evaluated For Impairment) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Sep. 30, 2018
Financing Receivable, Impaired [Line Items]
Loans with no related allowance recorded, Recorded Investment	$ 11,046		$ 11,046		$ 11,781
Loans with no related allowance recorded, Unpaid Principal Balance	11,734		11,734		12,392
Loans with no related allowance recorded, Related Allowance	0		0		0
Loans with no related allowance recorded, Average Recorded Investment	12,143	$ 12,699	12,292	$ 12,176
Loans with no related allowance recorded, Interest Income Recognized	112	120	231	223
Loans with an allowance recorded, Recorded Investment	2,670		2,670		1,546
Loans with an allowance recorded, Unpaid Principal Balance	2,727		2,727		1,703
Loans with an allowance recorded, Related Allowance	1,044		1,044		511
Loans with an allowance recorded, Average Recorded Investment	2,368	384	2,069	396
Loans with an allowance recorded, Interest Income Recognized	0	0	0	0
Total, Recorded Investment	13,716		13,716		13,327
Total, Unpaid Principal Balance	14,461		14,461		14,095
Total, Related Allowance	1,044		1,044		511
Total, Average Recorded Investment	14,511	13,083	14,361	12,572
Total, Interest Income Recognized	112	120	231	223
Residential real estate [Member]
Financing Receivable, Impaired [Line Items]
Loans with no related allowance recorded, Recorded Investment	4,474		4,474		4,833
Loans with no related allowance recorded, Unpaid Principal Balance	4,965		4,965		5,285
Loans with no related allowance recorded, Related Allowance	0		0		0
Loans with no related allowance recorded, Average Recorded Investment	5,132	5,247	5,203	5,136
Loans with no related allowance recorded, Interest Income Recognized	29	35	63	71
Loans with an allowance recorded, Recorded Investment	0		0		274
Loans with an allowance recorded, Unpaid Principal Balance	0		0		282
Loans with an allowance recorded, Related Allowance	0		0		7
Loans with an allowance recorded, Average Recorded Investment	91	255	172	272
Loans with an allowance recorded, Interest Income Recognized	0	0	0	0
Total, Recorded Investment	4,474		4,474		5,107
Total, Unpaid Principal Balance	4,965		4,965		5,567
Total, Related Allowance	0		0		7
Total, Average Recorded Investment	5,223	5,502	5,375	5,408
Total, Interest Income Recognized	29	35	63	71
Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Loans with no related allowance recorded, Recorded Investment	6,261		6,261		6,568
Loans with no related allowance recorded, Unpaid Principal Balance	6,445		6,445		6,715
Loans with no related allowance recorded, Related Allowance	0		0		0
Loans with no related allowance recorded, Average Recorded Investment	6,616	6,941	6,675	6,610
Loans with no related allowance recorded, Interest Income Recognized	80	80	162	144
Loans with an allowance recorded, Recorded Investment	2,464		2,464		1,151
Loans with an allowance recorded, Unpaid Principal Balance	2,538		2,538		1,293
Loans with an allowance recorded, Related Allowance	963		963		492
Loans with an allowance recorded, Average Recorded Investment	2,104	0	1,722	0
Loans with an allowance recorded, Interest Income Recognized	0	0	0	0
Total, Recorded Investment	8,725		8,725		7,719
Total, Unpaid Principal Balance	8,983		8,983		8,008
Total, Related Allowance	963		963		492
Total, Average Recorded Investment	8,720	6,941	8,397	6,610
Total, Interest Income Recognized	80	80	162	144
Multifamily [Member]
Financing Receivable, Impaired [Line Items]
Loans with no related allowance recorded, Recorded Investment	0		0		0
Loans with no related allowance recorded, Unpaid Principal Balance	0		0		0
Loans with no related allowance recorded, Related Allowance	0		0		0
Loans with no related allowance recorded, Average Recorded Investment	0	0	0	0
Loans with no related allowance recorded, Interest Income Recognized	0	0	0	0
Loans with an allowance recorded, Recorded Investment	0		0		0
Loans with an allowance recorded, Unpaid Principal Balance	0		0		0
Loans with an allowance recorded, Related Allowance	0		0		0
Loans with an allowance recorded, Average Recorded Investment	0	0	0	0
Loans with an allowance recorded, Interest Income Recognized	0	0	0	0
Total, Recorded Investment	0		0		0
Total, Unpaid Principal Balance	0		0		0
Total, Related Allowance	0		0		0
Total, Average Recorded Investment	0	0	0	0
Total, Interest Income Recognized	0	0	0	0
Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans with no related allowance recorded, Recorded Investment	0		0		0
Loans with no related allowance recorded, Unpaid Principal Balance	0		0		0
Loans with no related allowance recorded, Related Allowance	0		0		0
Loans with no related allowance recorded, Average Recorded Investment	0	0	0	0
Loans with no related allowance recorded, Interest Income Recognized	0	0	0	0
Loans with an allowance recorded, Recorded Investment	0		0		0
Loans with an allowance recorded, Unpaid Principal Balance	0		0		0
Loans with an allowance recorded, Related Allowance	0		0		0
Loans with an allowance recorded, Average Recorded Investment	0	0	0	0
Loans with an allowance recorded, Interest Income Recognized	0	0	0	0
Total, Recorded Investment	0		0		0
Total, Unpaid Principal Balance	0		0		0
Total, Related Allowance	0		0		0
Total, Average Recorded Investment	0	0	0	0
Total, Interest Income Recognized	0	0	0	0
Land and land development [Member]
Financing Receivable, Impaired [Line Items]
Loans with no related allowance recorded, Recorded Investment	0		0		27
Loans with no related allowance recorded, Unpaid Principal Balance	0		0		28
Loans with no related allowance recorded, Related Allowance	0		0		0
Loans with no related allowance recorded, Average Recorded Investment	0	29	12	29
Loans with no related allowance recorded, Interest Income Recognized	0	0	0	0
Loans with an allowance recorded, Recorded Investment	0		0		0
Loans with an allowance recorded, Unpaid Principal Balance	0		0		0
Loans with an allowance recorded, Related Allowance	0		0		0
Loans with an allowance recorded, Average Recorded Investment	0	0	0	0
Loans with an allowance recorded, Interest Income Recognized	0	0	0	0
Total, Recorded Investment	0		0		27
Total, Unpaid Principal Balance	0		0		28
Total, Related Allowance	0		0		0
Total, Average Recorded Investment	0	29	12	29
Total, Interest Income Recognized	0	0	0	0
Commercial business [Member]
Financing Receivable, Impaired [Line Items]
Loans with no related allowance recorded, Recorded Investment	200		200		231
Loans with no related allowance recorded, Unpaid Principal Balance	209		209		241
Loans with no related allowance recorded, Related Allowance	0		0		0
Loans with no related allowance recorded, Average Recorded Investment	277	361	283	291
Loans with no related allowance recorded, Interest Income Recognized	2	4	4	6
Loans with an allowance recorded, Recorded Investment	97		97		0
Loans with an allowance recorded, Unpaid Principal Balance	80		80		0
Loans with an allowance recorded, Related Allowance	70		70		0
Loans with an allowance recorded, Average Recorded Investment	20	0	11	0
Loans with an allowance recorded, Interest Income Recognized	0	0	0	0
Total, Recorded Investment	297		297		231
Total, Unpaid Principal Balance	289		289		241
Total, Related Allowance	70		70		0
Total, Average Recorded Investment	297	361	294	291
Total, Interest Income Recognized	2	4	4	6
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Loans with no related allowance recorded, Recorded Investment	111		111		122
Loans with no related allowance recorded, Unpaid Principal Balance	115		115		123
Loans with no related allowance recorded, Related Allowance	0		0		0
Loans with no related allowance recorded, Average Recorded Investment	118	121	119	110
Loans with no related allowance recorded, Interest Income Recognized	1	1	2	2
Loans with an allowance recorded, Recorded Investment	109		109		121
Loans with an allowance recorded, Unpaid Principal Balance	109		109		128
Loans with an allowance recorded, Related Allowance	11		11		12
Loans with an allowance recorded, Average Recorded Investment	153	129	164	124
Loans with an allowance recorded, Interest Income Recognized	0	0	0	0
Total, Recorded Investment	220		220		243
Total, Unpaid Principal Balance	224		224		251
Total, Related Allowance	11		11		$ 12
Total, Average Recorded Investment	271	250	283	234
Total, Interest Income Recognized	$ 1	$ 1	$ 2	$ 2

Loans and Allowance for Loan _7

Loans and Allowance for Loan Losses (Recorded Investment In Nonperforming Loans By Class Of Loans) (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual Loans	$ 5,215	$ 4,182
Loans 90+ Days Past Due Still Accruing	156	91
Total Nonperforming Loans	5,371	4,273
Residential real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual Loans	2,446	2,711
Loans 90+ Days Past Due Still Accruing	141	91
Total Nonperforming Loans	2,587	2,802
Commercial real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual Loans	2,529	1,284
Loans 90+ Days Past Due Still Accruing	0	0
Total Nonperforming Loans	2,529	1,284
Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual Loans	0	0
Loans 90+ Days Past Due Still Accruing	0	0
Total Nonperforming Loans	0	0
Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual Loans	0	0
Loans 90+ Days Past Due Still Accruing	0	0
Total Nonperforming Loans	0	0
Land and land development [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual Loans	0	27
Loans 90+ Days Past Due Still Accruing	0	0
Total Nonperforming Loans	0	27
Commercial business [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual Loans	97	0
Loans 90+ Days Past Due Still Accruing	0	0
Total Nonperforming Loans	97	0
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual Loans	143	160
Loans 90+ Days Past Due Still Accruing	15	0
Total Nonperforming Loans	$ 158	$ 160

Loans and Allowance for Loan _8

Loans and Allowance for Loan Losses (Aging of Recorded Investment in Past Due Loans) (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 6,535	$ 4,991
Current	768,942	711,290
Total Loans	775,477	716,281
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,436	2,834
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	149	713
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,950	1,444
Residential real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,276	3,939
Current	195,773	191,862
Total Loans	199,049	195,801
Residential real estate [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,423	2,088
Residential real estate [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	71	649
Residential real estate [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	782	1,202
Commercial real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,929	906
Current	382,491	344,099
Total Loans	385,420	345,005
Commercial real estate [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	843	696
Commercial real estate [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	29	0
Commercial real estate [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,057	210
Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	34,483	28,865
Total Loans	34,483	28,865
Multifamily [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Multifamily [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Multifamily [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	24,280	28,347
Total Loans	24,280	28,347
Construction [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Construction [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Construction [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Land and land development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	87	27
Current	11,761	10,497
Total Loans	11,848	10,524
Land and land development [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	39	0
Land and land development [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	48	27
Land and land development [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Commercial business [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	149	7
Current	78,199	68,419
Total Loans	78,348	68,426
Commercial business [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	53	7
Commercial business [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Commercial business [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	96	0
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	94	112
Current	41,955	39,201
Total Loans	42,049	39,313
Consumer [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	78	43
Consumer [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1	37
Consumer [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 15	$ 32

Loans and Allowance for Loan _9

Loans and Allowance for Loan Losses (Recorded Investment in Loans by Risk Category) (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 775,477	$ 716,281
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	757,775	701,230
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,463	309
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	16,170	14,668
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	69	74
Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	199,049	195,801
Residential Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	194,698	190,647
Residential Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	19
Residential Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	4,285	5,061
Residential Real Estate [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	66	74
Residential Real Estate [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	385,420	345,005
Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	375,796	338,256
Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,063	0
Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	8,561	6,749
Commercial Real Estate [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Commercial Real Estate [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	34,483	28,865
Multifamily [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	33,998	28,365
Multifamily [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Multifamily [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	485	500
Multifamily [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Multifamily [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	24,280	28,347
Construction [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	24,280	28,347
Construction [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Construction [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Construction [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Construction [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Land and Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	11,848	10,524
Land and Land Development [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	11,848	10,207
Land and Land Development [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	290
Land and Land Development [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	27
Land and Land Development [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Land and Land Development [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Commercial Business [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	78,348	68,426
Commercial Business [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	75,176	66,162
Commercial Business [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	400	0
Commercial Business [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	2,772	2,264
Commercial Business [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Commercial Business [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	42,049	39,313
Consumer [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	41,979	39,246
Consumer [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Consumer [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	67	67
Consumer [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	3	0
Consumer [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 0	$ 0

Loans and Allowance for Loan_10

Loans and Allowance for Loan Losses (Recorded Investment in Troubled Debt Restructurings by Class of Loan and Accrual Status) (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Financing Receivable, Modifications [Line Items]
Accruing	$ 8,501	$ 9,145
Nonaccrual	358	86
Total	8,859	9,231
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Accruing	2,028	2,396
Nonaccrual	293	21
Total	2,321	2,417
Commercial real estate [Member]
Financing Receivable, Modifications [Line Items]
Accruing	6,196	6,435
Nonaccrual	65	65
Total	6,261	6,500
Commercial business [Member]
Financing Receivable, Modifications [Line Items]
Accruing	200	231
Nonaccrual	0	0
Total	200	231
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Accruing	77	83
Nonaccrual	0	0
Total	$ 77	$ 83

Loans and Allowance for Loan_11

Loans and Allowance for Loan Losses (Troubled Debt Restructurings) (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018USD ($)Number	Dec. 31, 2017Number	Mar. 31, 2018USD ($)Number
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Number of Loans | Number	1	4
Pre-Modification Principal Balance	$ 140		$ 1,987
Post-Modification Principal Balance	$ 120		$ 1,967
Residential real estate [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Number of Loans | Number	1		1
Pre-Modification Principal Balance	$ 140		$ 140
Post-Modification Principal Balance	$ 120		$ 120
Commercial real estate [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Number of Loans | Number			1
Pre-Modification Principal Balance			$ 1,674
Post-Modification Principal Balance			1,674
Commercial Business [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Number of Loans | Number		1
Pre-Modification Principal Balance			170
Post-Modification Principal Balance			170
Consumer [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Number of Loans | Number		1
Pre-Modification Principal Balance			3
Post-Modification Principal Balance			$ 3

LOANS AND ALLOWANCE FOR LOAN_12

LOANS AND ALLOWANCE FOR LOAN LOSSES (Loan Servicing Rights) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Balance, beginning of period	$ 2,554	$ 1,746	$ 2,405	$ 1,389
Servicing rights resulting from transfers of loans	192	438	443	867
Amortization	(151)	(68)	(253)	(140)
Change in valuation allowance	0	0	0	0
Balance, end of period	$ 2,595	$ 2,116	$ 2,595	$ 2,116

Loans and Allowance for Loan_13

Loans and Allowance for Loan Losses (Additional Information) (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Sep. 30, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Impaired, Commitment to Lend					$ 1,000
Impaired Financing Receivable, Unpaid Principal Balance	$ 14,461,000		$ 14,461,000		14,095,000
Troubled Debt Restructuring, Debtor, Subsequent Periods, Contingent Payments, Amount	114,000		114,000
Servicing Assets Valuation Allowance					177,000
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Real Estate Acquired Through Foreclosure	967,000		967,000		1,300,000
Other Real Estate	79,000		79,000		103,000
Loan Servicing Rights [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	137,600,000	$ 96,900,000	137,600,000	$ 96,900,000	120,600,000
Financial Service Revenue		6,000		9,000
Loan Servicing Rights [Member] | Bank Servicing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	9,000		16,000
Troubled Debt Restructuring [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance, Covered					$ 5,000
SBA Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financial Service Revenue	$ 301,000	$ 191,000	$ 573,000	$ 341,000

Deposits (Summary of Deposits)

Deposits (Summary of Deposits) (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Deposits [Line Items]
Noninterest-bearing demand deposits	$ 162,901	$ 167,705
NOW accounts	170,454	173,543
Money market accounts	104,691	107,124
Savings accounts	121,978	120,995
Retail time deposits	136,640	123,007
Brokered time deposits	128,106	118,738
Total	$ 824,770	$ 811,112

Supplemental Disclosure for E_3

Supplemental Disclosure for Earnings Per Share (Earnings Per Share Information) (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Earnings:
Net income attributable to First Savings Financial Group, Inc.	$ 3,533,000	$ 1,646,000	$ 6,464	$ 5,052
Shares:
Weighted average shares outstanding	2,307,155	2,251,425	2,295,788	2,239,823
Net income per share, basic	$ 1.53	$ 0.73	$ 2.82	$ 2.26
Earnings:
Net income attributable to First Savings Financial Group, Inc.	$ 3,533,000	$ 1,646,000	$ 6,464	$ 5,052
Shares:
Weighted average shares outstanding	2,307,155	2,251,425	2,295,788	2,239,823
Add: Dilutive effect of outstanding options	50,205	113,176	65,650	117,518
Add: Dilutive effect of nonvested restricted stock	2,644	5,659	5,086	6,265
Weighted average shares outstanding, as adjusted	2,360,004	2,370,260	2,366,524	2,363,606
Net income per share, diluted	$ 1.50	$ 0.69	$ 2.73	$ 2.14

Supplemental Disclosure for E_4

Supplemental Disclosure for Earnings Per Share (Additional Information) (Detail)	6 Months Ended
	Mar. 31, 2019shares
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	10,200

Supplemental Disclosures of C_3

Supplemental Disclosures of Cash Flow Information (Cash Flow Information) (Detail) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash payments for:
Interest	$ 4,095	$ 2,766
Income taxes (net of refunds received)	337	1,214
Non-cash activities:
Transfers from loans held for sale to loans	0	560
Transfers from loans to foreclosed real estate	224	0
Proceeds from sales of foreclosed real estate financed through loans	47	427
Noncash exercise of stock options	542	387
Transfers from premises and equipment to other real estate owned	$ 1,838	$ 0

Fair Value Measurements and D_3

Fair Value Measurements and Disclosures about Fair Value of Financial Instruments (Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Beginning balance	$ 658	$ 0	$ 380	$ 0
Unrealized gains recognized in earnings, net of settlements	1,047	0	1,325	0
Ending balance	$ 1,705	$ 0	$ 1,705	$ 0

Fair Value Measurements and D_4

Fair Value Measurements and Disclosures about Fair Value of Financial Instruments (Valuation Techniques) (Detail)	Mar. 31, 2019	Sep. 30, 2018
Pull Through Rate [Member] | Maximum [Member]
Debt Instrument, Measurement Input	97	95
Pull Through Rate [Member] | Minimum [Member]
Debt Instrument, Measurement Input	69	72
Direct Costs to Close [Member]
Debt Instrument, Measurement Input	1
Direct Costs to Close [Member] | Maximum [Member]
Debt Instrument, Measurement Input		3
Direct Costs to Close [Member] | Minimum [Member]
Debt Instrument, Measurement Input		1

Fair Value Measurements and D_5

Fair Value Measurements and Disclosures about Fair Value of Financial Instruments (Fair Value By Balance Sheet Grouping) (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Mar. 31, 2018	Sep. 30, 2018	Mar. 31, 2019
Residential mortgage loans held for sale Aggregate Fair Value		$ 9,952	$ 25,017
Residential mortgage loans held for sale Aggregate Principal Balance		9,695	$ 23,959
Residential mortgage loans held for sale Difference	$ 1,058	$ 257

Fair Value Measurements and D_6

Fair Value Measurements and Disclosures about Fair Value of Financial Instruments (Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings) (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Gains – included in mortgage banking income	$ 5,074,000	$ 53,000	$ 8,363,000	$ 168,000
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings	624	0	1,367	0
Interest Income [Member]
Interest income	187	0	341	0
Mortgage Banking [Member]
Gains – included in mortgage banking income	$ 437,000	$ 0	$ 1,026	$ 0

Fair Value Measurements and D_7

Fair Value Measurements and Disclosures about Fair Value of Financial Instruments (Balances Of Financial Assets Measured At Fair Value On Recurring And Nonrecurring) (Detail) - USD ($)	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	$ 191,082,000		$ 184,373,000
Total loans held for sale	25,017,000		9,952,000
Loans servicing rights	2,595,000	$ 2,554,000	2,405,000	$ 2,116,000	$ 1,746,000	$ 1,389,000
Residential mortgage loans held for sale	762,661,000		704,271,000
Derivative assets (included in other assets)	1,705,000		421,000
Derivative liabilities (included in other liabilities)	384,000		0
Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned	1,917,000
Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned	967,000		1,300,000
Residential real estate | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned	79,000
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	191,082,000		184,373,000
Derivative assets (included in other assets)	1,705,000		421,000
Derivative liabilities (included in other liabilities)	384,000
Fair Value, Measurements, Recurring | Residential Mortgage Loans Held For Sale Fair Value Option Elected [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loans held for sale	25,017,000		9,952,000
Fair Value, Measurements, Recurring | Agency mortgage-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	23,493,000		31,130,000
Fair Value, Measurements, Recurring | Agency CMO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	11,630,000		10,441,000
Fair Value, Measurements, Recurring | Privately issued CMO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	1,433,000		1,579,000
Fair Value, Measurements, Recurring | Privately-issued ABS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	1,383,000		1,884,000
Fair Value, Measurements, Recurring | SBA Certificates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	1,233,000		1,351,000
Fair Value, Measurements, Recurring | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	151,910,000		137,988,000
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	12,672,000		12,816,000
Loans servicing rights	2,595,000		2,405,000
Total other real estate owned			103,000
Fair Value, Measurements, Nonrecurring | Bank Premises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	1,838,000
Fair Value, Measurements, Nonrecurring | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	4,474,000		5,100,000
Fair Value, Measurements, Nonrecurring | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	7,762,000		7,227,000
Fair Value, Measurements, Nonrecurring | Commercial business
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	227,000		231,000
Fair Value, Measurements, Nonrecurring | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	209,000		231,000
Fair Value, Measurements, Nonrecurring | Land and Land Development [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans			27,000
Fair Value, Measurements, Nonrecurring | Small Business Administration Loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans held for sale	23,786,000		21,659,000
Fair Value, Measurements, Nonrecurring | Residential mortgage loans held for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned			103,000
Fair Value, Measurements, Nonrecurring | Residential Mortgage Loans Held For Sale Fair Value Option Not Elected [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loans held for sale	0		514,000
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0		0
Loans servicing rights	0		0
Residential mortgage loans held for sale	0		0
Derivative assets (included in other assets)	0		0
Derivative liabilities (included in other liabilities)	0
Level 1 | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned	0
Level 1 | Residential real estate | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned	0
Level 1 | Residential mortgage loans held for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loans held for sale	0		0
Level 1 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0		0
Derivative assets (included in other assets)	0		0
Derivative liabilities (included in other liabilities)	0
Level 1 | Fair Value, Measurements, Recurring | Residential Mortgage Loans Held For Sale Fair Value Option Elected [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loans held for sale			0
Level 1 | Fair Value, Measurements, Recurring | Agency mortgage-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0		0
Level 1 | Fair Value, Measurements, Recurring | Agency CMO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0		0
Level 1 | Fair Value, Measurements, Recurring | Privately issued CMO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0		0
Level 1 | Fair Value, Measurements, Recurring | Privately-issued ABS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0		0
Level 1 | Fair Value, Measurements, Recurring | SBA Certificates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0		0
Level 1 | Fair Value, Measurements, Recurring | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0		0
Level 1 | Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	0		0
Loans servicing rights	0		0
Total other real estate owned			0
Level 1 | Fair Value, Measurements, Nonrecurring | Bank Premises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	0
Level 1 | Fair Value, Measurements, Nonrecurring | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	0		0
Level 1 | Fair Value, Measurements, Nonrecurring | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	0		0
Level 1 | Fair Value, Measurements, Nonrecurring | Commercial business
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	0		0
Level 1 | Fair Value, Measurements, Nonrecurring | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	0		0
Level 1 | Fair Value, Measurements, Nonrecurring | Land and Land Development [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans			0
Level 1 | Fair Value, Measurements, Nonrecurring | Small Business Administration Loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans held for sale	0		0
Level 1 | Fair Value, Measurements, Nonrecurring | Residential mortgage loans held for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned			0
Level 1 | Fair Value, Measurements, Nonrecurring | Residential Mortgage Loans Held For Sale Fair Value Option Not Elected [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loans held for sale			0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	191,082,000		184,373,000
Loans servicing rights	0		0
Residential mortgage loans held for sale	0		0
Derivative assets (included in other assets)	0		41,000
Derivative liabilities (included in other liabilities)	384,000
Level 2 | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned	0
Level 2 | Residential real estate | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned	0
Level 2 | Residential mortgage loans held for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loans held for sale	25,017,000		10,476,000
Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	191,082,000		184,373,000
Derivative assets (included in other assets)	0		41,000
Derivative liabilities (included in other liabilities)	384,000
Level 2 | Fair Value, Measurements, Recurring | Residential Mortgage Loans Held For Sale Fair Value Option Elected [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loans held for sale	25,017,000		9,952,000
Level 2 | Fair Value, Measurements, Recurring | Agency mortgage-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	23,493,000		31,130,000
Level 2 | Fair Value, Measurements, Recurring | Agency CMO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	11,630,000		10,441,000
Level 2 | Fair Value, Measurements, Recurring | Privately issued CMO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	1,433,000		1,579,000
Level 2 | Fair Value, Measurements, Recurring | Privately-issued ABS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	1,383,000		1,884,000
Level 2 | Fair Value, Measurements, Recurring | SBA Certificates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	1,233,000		1,351,000
Level 2 | Fair Value, Measurements, Recurring | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	151,910,000		137,988,000
Level 2 | Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	0		0
Loans servicing rights	0		0
Total other real estate owned			0
Level 2 | Fair Value, Measurements, Nonrecurring | Bank Premises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	0
Level 2 | Fair Value, Measurements, Nonrecurring | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	0		0
Level 2 | Fair Value, Measurements, Nonrecurring | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	0		0
Level 2 | Fair Value, Measurements, Nonrecurring | Commercial business
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	0		0
Level 2 | Fair Value, Measurements, Nonrecurring | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	0		0
Level 2 | Fair Value, Measurements, Nonrecurring | Land and Land Development [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans			0
Level 2 | Fair Value, Measurements, Nonrecurring | Small Business Administration Loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans held for sale	0		21,659,000
Level 2 | Fair Value, Measurements, Nonrecurring | Residential mortgage loans held for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned			0
Level 2 | Fair Value, Measurements, Nonrecurring | Residential Mortgage Loans Held For Sale Fair Value Option Not Elected [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loans held for sale			514,000
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0		0
Loans servicing rights	2,595		2,405,000
Residential mortgage loans held for sale	727,442		673,652,000
Derivative assets (included in other assets)	1,705		380,000
Derivative liabilities (included in other liabilities)	0
Level 3 | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned	1,917,000
Level 3 | Residential real estate | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned	79,000
Level 3 | Residential mortgage loans held for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loans held for sale	0		0
Level 3 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0		0
Derivative assets (included in other assets)	1,705,000		380,000
Derivative liabilities (included in other liabilities)	0
Level 3 | Fair Value, Measurements, Recurring | Residential Mortgage Loans Held For Sale Fair Value Option Elected [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loans held for sale	0		0
Level 3 | Fair Value, Measurements, Recurring | Agency mortgage-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0		0
Level 3 | Fair Value, Measurements, Recurring | Agency CMO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0		0
Level 3 | Fair Value, Measurements, Recurring | Privately issued CMO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0		0
Level 3 | Fair Value, Measurements, Recurring | Privately-issued ABS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0		0
Level 3 | Fair Value, Measurements, Recurring | SBA Certificates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0		0
Level 3 | Fair Value, Measurements, Recurring | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	0		0
Level 3 | Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	12,672,000		12,816,000
Loans servicing rights	2,595,000		2,405,000
Total other real estate owned			103,000
Level 3 | Fair Value, Measurements, Nonrecurring | Bank Premises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	1,838,000
Level 3 | Fair Value, Measurements, Nonrecurring | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	4,474,000		5,100,000
Level 3 | Fair Value, Measurements, Nonrecurring | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	7,762,000		7,227,000
Level 3 | Fair Value, Measurements, Nonrecurring | Commercial business
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	227,000		231,000
Level 3 | Fair Value, Measurements, Nonrecurring | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	209,000		231,000
Level 3 | Fair Value, Measurements, Nonrecurring | Land and Land Development [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans			27,000
Level 3 | Fair Value, Measurements, Nonrecurring | Small Business Administration Loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans held for sale	$ 23,786,000		0
Level 3 | Fair Value, Measurements, Nonrecurring | Residential mortgage loans held for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total other real estate owned			103,000
Level 3 | Fair Value, Measurements, Nonrecurring | Residential Mortgage Loans Held For Sale Fair Value Option Not Elected [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loans held for sale			$ 0

Fair Value Measurements and D_8

Fair Value Measurements and Disclosures about Fair Value of Financial Instruments (Carrying Value And Estimated Fair Value Of Financial Instruments) (Detail) - USD ($)	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017
Financial assets:
Cash and due from banks	$ 11,617,000		$ 14,191,000
Interest-bearing deposits with banks	28,825,000		28,083,000
Securities available for sale	191,082,000		184,373,000
Securities held to maturity	2,465,000		2,607,000
Loans, net	762,661,000		704,271,000
Loan servicing rights (included in other assets)	2,595,000	$ 2,554,000	2,405,000	$ 2,116,000	$ 1,746,000	$ 1,389,000
Derivative assets (included in other assets)	1,705,000		421,000
Financial liabilities:
Deposits	824,770,000		811,112,000
Short-term repurchase agreements	1,353,000		1,352,000
Borrowings from FHLB	160,938,000		90,000,000
Accrued interest payable	1,325,000		743,000
Advance payments by borrowers for taxes and insurance	1,274,000		1,218,000
Derivative Liability	384,000		0
Fair Value, Inputs, Level 1 [Member]
Financial assets:
Cash and due from banks	11,617,000		14,191,000
Interest-bearing deposits with banks	28,825,000		28,083,000
Interest-bearing time deposits	0		0
Securities available for sale	0		0
Securities held to maturity	0		0
Loans, net	0		0
Accrued interest receivable	0		0
Loan servicing rights (included in other assets)	0		0
Derivative assets (included in other assets)	0		0
Financial liabilities:
Deposits	0		0
Short-term repurchase agreements	0		0
Borrowings from FHLB	0		0
Subordinated note	0		0
Accrued interest payable	0		0
Advance payments by borrowers for taxes and insurance	0		0
Derivative Liability	0
Fair Value, Inputs, Level 1 [Member] | Small Business Administration Loans [Member]
Financial assets:
Loans, net	0		0
Fair Value, Inputs, Level 1 [Member] | Residential mortgage loans held for sale [Member]
Financial assets:
Loans, net	0		0
Fair Value, Inputs, Level 2 [Member]
Financial assets:
Cash and due from banks	0		0
Interest-bearing deposits with banks	0		0
Interest-bearing time deposits	2,958,000		2,494,000
Securities available for sale	191,082,000		184,373,000
Securities held to maturity	2,861,000		2,896,000
Loans, net	0		0
Accrued interest receivable	4,602,000		4,287,000
Loan servicing rights (included in other assets)	0		0
Derivative assets (included in other assets)	0		41,000
Financial liabilities:
Deposits	0		0
Short-term repurchase agreements	1,353,000		1,352,000
Borrowings from FHLB	155,264,000		84,175,000
Subordinated note	19,695,000		19,661,000
Accrued interest payable	1,325,000		743,000
Advance payments by borrowers for taxes and insurance	1,274,000		1,218,000
Derivative Liability	384,000
Fair Value, Inputs, Level 2 [Member] | Small Business Administration Loans [Member]
Financial assets:
Loans, net	0		23,488,000
Fair Value, Inputs, Level 2 [Member] | Residential mortgage loans held for sale [Member]
Financial assets:
Loans, net	25,017,000		10,476,000
Fair Value, Inputs, Level 3 [Member]
Financial assets:
Cash and due from banks	0		0
Interest-bearing deposits with banks	0		0
Interest-bearing time deposits	0		0
Securities available for sale	0		0
Securities held to maturity	0		0
Loans, net	727,442		673,652,000
Accrued interest receivable	0		0
Loan servicing rights (included in other assets)	2,595		2,405,000
Derivative assets (included in other assets)	1,705		380,000
Financial liabilities:
Deposits	824,193		809,305,000
Short-term repurchase agreements	0		0
Borrowings from FHLB	0		0
Subordinated note	0		0
Accrued interest payable	0		0
Advance payments by borrowers for taxes and insurance	0		0
Derivative Liability	0
Fair Value, Inputs, Level 3 [Member] | Small Business Administration Loans [Member]
Financial assets:
Loans, net	26,407		0
Fair Value, Inputs, Level 3 [Member] | Residential mortgage loans held for sale [Member]
Financial assets:
Loans, net	0		0
Estimate of Fair Value Measurement [Member]
Financial assets:
Cash and due from banks	11,617,000		14,191,000
Interest-bearing deposits with banks	28,825,000		28,083,000
Interest-bearing time deposits	2,963,000		2,501,000
Securities available for sale	191,082,000		184,373,000
Securities held to maturity	2,465,000		2,607,000
Loans, net	762,661,000		704,271,000
FRB and FHLB stock	10,196,000		9,621,000
Accrued interest receivable	4,602,000		4,287,000
Loan servicing rights (included in other assets)	2,595,000		2,405,000
Derivative assets (included in other assets)	1,705,000		421,000
Financial liabilities:
Deposits	824,770,000		811,112,000
Short-term repurchase agreements	1,353,000		1,352,000
Borrowings from FHLB	160,938,000		90,000,000
Subordinated note	19,695,000		19,661,000
Accrued interest payable	1,325,000		743,000
Advance payments by borrowers for taxes and insurance	1,274,000		1,218,000
Derivative Liability	384,000
Estimate of Fair Value Measurement [Member] | Small Business Administration Loans [Member]
Financial assets:
Loans, net	23,786,000		21,659,000
Estimate of Fair Value Measurement [Member] | Residential mortgage loans held for sale [Member]
Financial assets:
Loans, net	$ 25,017,000		$ 10,466,000

Fair Value Measurements and D_9

Fair Value Measurements and Disclosures about Fair Value of Financial Instruments (Additional information) (Detail)	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2019USD ($)	Mar. 31, 2018USD ($)	Mar. 31, 2019USD ($)Number	Mar. 31, 2018USD ($)	Sep. 30, 2018	Dec. 31, 2018Number
Financing Receivable Recorded Investment 90 Days Past Due And Still Accruing Number Of Loans Less than Thousand			1,000
Other Real Estate, Valuation Adjustments | $		$ 49,000		$ 59,000
Impaired Loans [Member]
Foreclosed Real Estate Expense | $	$ 379,000	$ 16,000	$ 546,000	$ 18,000
Maximum [Member] | Measurement Input, Discount Rate [Member]
Other Real Estate Owned, Measurement Input						67.1
Maximum [Member] | Foreclosed Real Estate Held [Member] | Measurement Input, Discount Rate [Member]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate					100.00%
Maximum [Member] | Collateral [Member] | Measurement Input, Discount Rate [Member]
Fair Value Inputs Discount Rate		6.00%
Maximum [Member] | Impaired Loans [Member] | Measurement Input, Discount Rate [Member]
Fair Value Inputs Discount Rate					15.00%
Maximum [Member] | Loan Servicing Rights [Member] | Measurement Input, Discount Rate [Member]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate			21.18%		23.22%
Maximum [Member] | Loan Servicing Rights [Member] | Measurement Input, Constant Prepayment Rate [Member]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate			17.72%		14.43%
Minimum [Member] | Measurement Input, Discount Rate [Member]
Other Real Estate Owned, Measurement Input						15
Minimum [Member] | Foreclosed Real Estate Held [Member] | Measurement Input, Discount Rate [Member]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate					15.00%
Minimum [Member] | Collateral [Member] | Measurement Input, Discount Rate [Member]
Fair Value Inputs Discount Rate	0.00%
Minimum [Member] | Impaired Loans [Member] | Measurement Input, Discount Rate [Member]
Fair Value Inputs Discount Rate			0.00%
Minimum [Member] | Loan Servicing Rights [Member] | Measurement Input, Discount Rate [Member]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate			8.41%		10.84%
Minimum [Member] | Loan Servicing Rights [Member] | Measurement Input, Constant Prepayment Rate [Member]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed			5.55%		4.32%
Weighted Average [Member] | Measurement Input, Discount Rate [Member]
Other Real Estate Owned, Measurement Input						28.7
Weighted Average [Member] | Foreclosed Real Estate Held [Member] | Measurement Input, Discount Rate [Member]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate					48.90%
Weighted Average [Member] | Loan Servicing Rights [Member] | Measurement Input, Discount Rate [Member]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate			12.36%		14.63%
Weighted Average [Member] | Loan Servicing Rights [Member] | Measurement Input, Constant Prepayment Rate [Member]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed			12.04%		10.08%

Employee Stock Ownership Plan (

Employee Stock Ownership Plan (Additional Information) (Detail) - $ / shares	Oct. 06, 2008	Mar. 31, 2019	Sep. 30, 2018
Total ESOP shares	203,363	147,110	151,999
Employee Stock Ownership Plan (ESOP), Weighted Average Purchase Price of Shares Purchased	$ 10

Stock Based Compensation Plan_2

Stock Based Compensation Plans (Fair Value Of Options Granted) (Detail)	6 Months Ended
	Mar. 31, 2019$ / shares
Expected dividend yield	1.75%
Risk-free interest rate	2.13%
Expected volatility	14.60%
Expected life of options	0 years
Weighted average fair value at grant date	$ 6.13

Stock Based Compensation Plan_3

Stock Based Compensation Plans (Stock Option Activity Under The Plan) (Detail) - USD ($)	6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Number of Shares
Outstanding at beginning of period	150,033
Granted	2,400
Exercised	(61,484)	(42,296)
Forfeited or expired	(750)
Outstanding at end of period	90,199
Vested and expected to vest	90,199
Exercisable at end of period	50,872
Weighted Average Exercise Price
Outstanding at beginning of period	$ 24.88
Granted	59.23
Exercised	14.30
Forfeited or expired	40.09
Outstanding at end of period	32.88
Vested and expected to vest	32.88
Exercisable at end of period	$ 22.90
Weighted Average Remaining Contractual Term
Outstanding of period	5 years 4 months 24 days
Vested and expected to vest	5 years 4 months 24 days
Exercisable at end of period	3 years 4 months 24 days
Aggregate Intrinsic Value
Outstanding at end of period	$ 2,001
Vested and expected to vest	2,001
Exercisable at end of period	$ 1,586

Stock Based Compensation Plan_4

Stock Based Compensation Plans (Nonvested Restricted Shares) (Detail) - Restricted Stock [Member]	6 Months Ended
	Mar. 31, 2019$ / sharesshares
Number of Shares
Nonvested at beginning of year | shares	14,812
Granted | shares	2,500
Vested | shares	(3,653)
Forfeited | shares	(201)
Nonvested at end of year | shares	13,458
Weighted Average Grant Date Fair Value
Nonvested, Beginning Balance | $ / shares	$ 41.20
Granted | $ / shares	59.23
Vested | $ / shares	40.99
Forfeited | $ / shares	40.09
Nonvested, Ending Balance | $ / shares	$ 44.62

Stock Based Compensation Plan_5

Stock Based Compensation Plans (Additional Information) (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	8,658		8,658
Fair value of restricted shares			$ 3,653	$ 3,453
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options	$ 211,000		211,000
Stock or Unit Option Plan Expense	$ 17,000	$ 16,000	$ 35,000	33,000
Employee Stock Ownership Plan (ESOP), Compensation Expense		$ 37,000		73,000
Equity Incentive Plan 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	88,000		88,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value			$ 100,000
Stock Option Plan 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	11,991		11,991
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value			$ 2.4
Employee Stock Option [Member] | Equity Incentive Plan 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	66,000		66,000
Restricted Stock [Member]
Fair value of restricted shares			$ 216,000	$ 195,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options	$ 534,000		$ 534,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			4 years 7 months 6 days
Employee Stock Ownership Plan (ESOP), Compensation Expense	$ 44,000		$ 85,000
Restricted Stock [Member] | Equity Incentive Plan 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	22,000		22,000
Equity Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	10,555		10,555
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition			4 years 7 months 6 days
Equity Option [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	1,436		1,436

Derivative Financial Instrume_3

Derivative Financial Instruments (Provides Information On The Company's Derivative Financial Instruments) (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Notional Amount	$ 153,282	$ 30,384
Asset Derivatives	1,705	421
Liability Derivatives	384	0
Interest Rate Lock Commitments [Member]
Notional Amount	89,782	16,634
Asset Derivatives	1,705	380
Liability Derivatives	0	0
Forward Mortgage Loan Sale Contracts [Member]
Notional Amount	63,500	13,750
Asset Derivatives	0	41
Liability Derivatives	$ 384	$ 0

Derivative Financial Instrume_4

Derivative Financial Instruments (Income (loss) Related To Derivative Financial Instruments Included In Mortgage Banking Income) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Derivative, Gain (Loss) on Derivative, Net	$ 423	$ 0	$ 550	$ 0
Interest Rate Lock Commitments [Member]
Derivative, Gain (Loss) on Derivative, Net	1,047	0	1,325	0
Forward Mortgage Loan Sale Contracts [Member]
Derivative, Gain (Loss) on Derivative, Net	$ (624)	$ 0	$ (775)	$ 0

Regulatory Capital (Bank's Actu

Regulatory Capital (Bank's Actual Capital Amounts And Ratios) (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Consolidated
Total capital (to risk weighted assets) Actual Amount	$ 121,718	$ 114,911
Tier 1 capital (to risk-weighted assets) Actual Amount	92,089	85,927
Common equity tier 1 capital (to risk-weighted assets) Actual Amount	92,089	85,927
Tier 1 capital (to average adjusted total assets) Actual Amount	$ 92,089	$ 85,927
Total capital (to risk weighted assets) Actual Ratio	14.12%	14.50%
Tier 1 capital (to risk-weighted assets) Actual Ratio	10.68%	10.84%
Common equity tier 1 capital (to risk-weighted assets) Actual Ratio	10.68%	10.84%
Tier 1 capital (to average adjusted total assets) Actual Ratio	8.42%	8.39%
Total capital (to risk weighted assets) Minimum For Capital Adequacy Purposes Amount	$ 68,978	$ 63,402
Tier 1 capital (to risk-weighted assets) Minimum For Capital Adequacy Purposes Amount	51,733	47,551
Common equity tier 1 capital (to risk-weighted assets) Minimum For Capital Adequacy Purposes Amount	38,800	35,663
Tier 1 capital (to average adjusted total assets) Minimum For Capital Adequacy Purposes Amount	$ 43,751	$ 40,982
Total capital (to risk weighted assets) Minimum For Capital Adequacy Purposes Ratio	8.00%	8.00%
Tier 1 capital (to risk-weighted assets) Minimum For Capital Adequacy Purposes Ratio	6.00%	6.00%
Common equity tier 1 capital (to risk-weighted assets) Minimum For Capital Adequacy Purposes Ratio	4.50%	4.50%
Tier 1 capital (to average adjusted total assets) Minimum For Capital Adequacy Purposes Ratio	4.00%	4.00%
Bank
Total capital (to risk weighted assets) Actual Amount	$ 111,468	$ 102,281
Tier 1 capital (to risk-weighted assets) Actual Amount	101,534	92,958
Common equity tier 1 capital (to risk-weighted assets) Actual Amount	101,534	92,958
Tier 1 capital (to average adjusted total assets) Actual Amount	$ 101,534	$ 92,958
Total capital (to risk weighted assets) Actual Ratio	12.95%	12.92%
Tier 1 capital (to risk-weighted assets) Actual Ratio	11.80%	11.75%
Common equity tier 1 capital (to risk-weighted assets) Actual Ratio	11.80%	11.75%
Tier 1 capital (to average adjusted total assets) Actual Ratio	9.31%	9.10%
Total capital (to risk weighted assets) Minimum For Capital Adequacy Purposes Amount	$ 68,854	$ 63,312
Tier 1 capital (to risk-weighted assets) Minimum For Capital Adequacy Purposes Amount	51,641	47,484
Common equity tier 1 capital (to risk-weighted assets) Minimum For Capital Adequacy Purposes Amount	38,730	35,613
Tier 1 capital (to average adjusted total assets) Minimum For Capital Adequacy Purposes Amount	$ 43,623	$ 40,840
Total capital (to risk weighted assets) Minimum For Capital Adequacy Purposes Ratio	8.00%	8.00%
Tier 1 capital (to risk-weighted assets) Minimum For Capital Adequacy Purposes Ratio	6.00%	6.00%
Common equity tier 1 capital (to risk-weighted assets) Minimum For Capital Adequacy Purposes Ratio	4.50%	4.50%
Tier 1 capital (to average adjusted total assets) Minimum For Capital Adequacy Purposes Ratio	4.00%	4.00%
Total capital (to risk weighted assets) Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 86,068	$ 79,140
Tier 1 capital (to risk-weighted assets) Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	68,854	63,312
Common equity tier 1 capital (to risk-weighted assets) Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	55,944	51,441
Tier 1 capital (to average adjusted total assets) Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 54,529	$ 51,050
Total capital (to risk weighted assets) Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	10.00%	10.00%
Tier 1 capital (to risk-weighted assets) Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	8.00%	8.00%
Common equity tier 1 capital (to risk-weighted assets) Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	6.50%	6.50%
Tier 1 capital (to average adjusted total assets) Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	5.00%	5.00%

Regulatory Capital (Additional

Regulatory Capital (Additional Information) (Detail)	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2015
Capital Conservation Buffer, Percentage	2.50%	1.875%	0.00%
Scenario, Forecast [Member]
Capital Conservation Buffer, Percentage	2.50%

Segment Reporting (Financial St

Segment Reporting (Financial Statements Information) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Net interest income	$ 9,861	$ 8,723	$ 19,437	$ 16,776
Net gains on sales of loans, SBA	521	1,488	1,485	3,027
Mortgage banking income	5,074	53	8,363	168
Noncash items:
Provision for loan losses	340	371	655	833
Depreciation and amortization	376	334	860	634
Income tax expense (benefit)	466	338	988	960
Segment profit (loss)	3,264	2,222	6,368	5,715
Segment assets	1,129,722	1,008,554	1,129,722	1,008,554
Core Banking Segment [Member]
Net interest income	9,043	7,975	17,863	15,494
Net gains on sales of loans, SBA	0	0	0	0
Mortgage banking income	3	53	30	168
Noncash items:
Provision for loan losses	(492)	256	(508)	(138)
Depreciation and amortization	323	321	759	608
Income tax expense (benefit)	694	323	1,319	978
Segment profit (loss)	3,185	1,230	6,165	4,417
Segment assets	1,093,766	1,001,206	1,093,766	1,001,206
SBA Lending Segment [Member]
Net interest income	934	741	1,842	1,268
Net gains on sales of loans, SBA	521	1,488	1,485	3,027
Mortgage banking income	0	0	0	0
Noncash items:
Provision for loan losses	832	115	1,163	971
Depreciation and amortization	12	13	24	26
Income tax expense (benefit)	(70)	171	(25)	203
Segment profit (loss)	(477)	1,004	(170)	1,190
Segment assets	80,521	58,690	80,521	58,690
Mortgage Banking Segment [Member]
Net interest income	187	0	341	0
Net gains on sales of loans, SBA	0	0	0	0
Mortgage banking income	5,071	0	8,333	0
Noncash items:
Provision for loan losses	0		0	0
Depreciation and amortization	23	0	43	0
Income tax expense (benefit)	176	0	163	0
Segment profit (loss)	528	0	491	0
Segment assets	27,346	0	27,346	0
Other Segment [Member]
Net interest income	(309)	7	(609)	14
Net gains on sales of loans, SBA	0	0	0	0
Mortgage banking income	0	0	0	0
Noncash items:
Provision for loan losses	0	0	0	0
Depreciation and amortization	18	0	34	0
Income tax expense (benefit)	(334)	(156)	(469)	(221)
Segment profit (loss)	28	(12)	(118)	108
Segment assets	$ (71,911)	$ (51,342)	$ (71,911)	$ (51,342)

Revenue from Contracts with C_3

Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Revenue from contracts with customers	$ 1,015	$ 826	$ 2,073	$ 1,730
Gain (loss) on sale of securities	1	(59)	1	91
Gain on sale of SBA loans	521	1,488	1,485	3,027
Mortgage banking income	5,074	53	8,363	168
Increase in cash value of life insurance	147	106	258	213
Real estate lease income	157	1	315	1
Other	174	152	375	243
Other noninterest income	6,074	1,741	10,797	3,743
Total noninterest income	7,089	2,567	12,870	5,473
Service charges on deposit accounts
Revenue from contracts with customers	449	399	960	776
ATM and interchange fees
Revenue from contracts with customers	446	299	899	662
Investment advisory income
Revenue from contracts with customers	77	98	134	226
Other
Revenue from contracts with customers	$ 43	$ 30	$ 80	$ 66