INVESTMENT SECURITIES - Schedule of Amortized Cost of Held-to-Maturity Debt Securities (Details) - Debt Securities [Member] - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024
AAA/AA/A [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities	$ 64,266	$ 76,816
BBB/BB/B [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities	3,000	3,000
Non-rated [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities
Mortgage backed securities - residential [Member] | Obligations of U.S. government agencies [Member] | AAA/AA/A [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities	6,558	7,209
Mortgage backed securities - residential [Member] | Obligations of U.S. government agencies [Member] | BBB/BB/B [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities
Mortgage backed securities - residential [Member] | Obligations of U.S. government agencies [Member] | Non-rated [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities
Mortgage backed securities - residential [Member] | Obligations of U.S. government-sponsored enterprises [Member] | AAA/AA/A [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities	40,741	42,701
Mortgage backed securities - residential [Member] | Obligations of U.S. government-sponsored enterprises [Member] | BBB/BB/B [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities
Mortgage backed securities - residential [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Non-rated [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities
Mortgage-backed securities - commercial [Member] | Obligations of U.S. government agencies [Member] | AAA/AA/A [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities	3,913	4,268
Mortgage-backed securities - commercial [Member] | Obligations of U.S. government agencies [Member] | BBB/BB/B [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities
Mortgage-backed securities - commercial [Member] | Obligations of U.S. government agencies [Member] | Non-rated [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities
Debt Securities [Member] | Obligations of U.S. government-sponsored enterprises [Member] | AAA/AA/A [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities	9,449	19,000
Debt Securities [Member] | Obligations of U.S. government-sponsored enterprises [Member] | BBB/BB/B [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities
Debt Securities [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Non-rated [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities
Private label mortgage-backed securities residential [Member] | Obligations of U.S. government-sponsored enterprises [Member] | AAA/AA/A [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities	174	190
Private label mortgage-backed securities residential [Member] | Obligations of U.S. government-sponsored enterprises [Member] | BBB/BB/B [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities
Private label mortgage-backed securities residential [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Non-rated [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities
ObligationsOfStateAndPoliticalSubdivisionsMember | Obligations of U.S. government-sponsored enterprises [Member] | AAA/AA/A [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities	3,431	3,448
ObligationsOfStateAndPoliticalSubdivisionsMember | Obligations of U.S. government-sponsored enterprises [Member] | BBB/BB/B [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities
ObligationsOfStateAndPoliticalSubdivisionsMember | Obligations of U.S. government-sponsored enterprises [Member] | Non-rated [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities
Corporate securities [Member] | Obligations of U.S. government-sponsored enterprises [Member] | AAA/AA/A [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities
Corporate securities [Member] | Obligations of U.S. government-sponsored enterprises [Member] | BBB/BB/B [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities	3,000	3,000
Corporate securities [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Non-rated [Member]
Obligations of U.S. government agencies:
Total held to maturity debt securities