Cover
Cover - USD ($) $ in Millions | 12 Months Ended | ||
Sep. 30, 2023 | Dec. 04, 2023 | Mar. 31, 2023 | |
Cover [Abstract] | |||
Document Type | 10-K/A | ||
Amendment Flag | true | ||
Amendment Description | This Form 10-K/A is filed to amend Part IV, Item 15 (Exhibits and Financial Statement Schedules) of the Annual Report on Form 10-K for the fiscal year ended September 30, 2023, as filed on December 20, 2023 (the "Original Form 10-K"), to include as an exhibit the First Savings Financial Group, Inc. Clawback Policy. | ||
Document Annual Report | true | ||
Document Transition Report | false | ||
Document Period End Date | Sep. 30, 2023 | ||
Document Fiscal Period Focus | FY | ||
Document Fiscal Year Focus | 2023 | ||
Current Fiscal Year End Date | --09-30 | ||
Entity File Number | 1-34155 | ||
Entity Registrant Name | FIRST SAVINGS FINANCIAL GROUP, INC. | ||
Entity Central Index Key | 0001435508 | ||
Entity Tax Identification Number | 37-1567871 | ||
Entity Incorporation, State or Country Code | IN | ||
Entity Address, Address Line One | 702 North Shore Drive, Suite 300, | ||
Entity Address, City or Town | Jeffersonville | ||
Entity Address, State or Province | IN | ||
Entity Address, Postal Zip Code | 47130 | ||
City Area Code | 812 | ||
Local Phone Number | 283-0724 | ||
Title of 12(b) Security | Common Stock, par value $0.01 per share | ||
Trading Symbol | FSFG | ||
Security Exchange Name | NASDAQ | ||
Entity Well-known Seasoned Issuer | No | ||
Entity Voluntary Filers | No | ||
Entity Current Reporting Status | Yes | ||
Entity Interactive Data Current | Yes | ||
Entity Filer Category | Accelerated Filer | ||
Entity Small Business | true | ||
Entity Emerging Growth Company | false | ||
Entity Shell Company | false | ||
Entity Public Float | $ 136 | ||
Entity Common Stock, Shares Outstanding | 6,917,921 | ||
ICFR Auditor Attestation Flag | true | ||
Document Financial Statement Error Correction [Flag] | false | ||
Auditor Name | FORVIS, LLP | ||
Auditor Firm ID | 686 | ||
Auditor Location | Louisville, Kentucky |