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INVESTMENT SECURITIES - Schedule of Amortized Cost and Fair Values of Investment Securities (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Jun. 30, 2025
Sep. 30, 2024
Investments [Member]    
Securities available-for-sale:    
Securities Available-For-Sale, Amortized Cost $ 22,594 $ 16,747
Securities held-to-maturity, Amortized Cost 69,520 79,816
Securities Held-To-Maturity, Credit Rating 69,520 79,816
Securities held-to-maturity:    
Securities Available-For-Sale, Amortized Cost 22,594 16,747
Securities held-to-maturity, Amortized Cost 69,520 79,816
Securities Held-To-Maturity, Credit Rating 69,520 79,816
Total investment securities, Amortized Cost 92,114 96,563
Obligations of U.S. government agencies:    
Securities Available-For-Sale, Amortized Cost 22,594 16,747
Securities held-to-maturity, Amortized Cost 69,520 79,816
Securities Held-To-Maturity, Credit Rating 69,520 79,816
Investments [Member] | Mortgage backed securities - residential [Member] | Obligations of U.S. government agencies [Member]    
Securities available-for-sale:    
Securities Available-For-Sale, Amortized Cost 91 95
Securities held-to-maturity, Amortized Cost 6,781 7,209
Securities Held-To-Maturity, Credit Rating 6,781 7,209
Securities held-to-maturity:    
Securities Available-For-Sale, Amortized Cost 91 95
Securities held-to-maturity, Amortized Cost 6,781 7,209
Securities Held-To-Maturity, Credit Rating 6,781 7,209
Obligations of U.S. government agencies:    
Securities Available-For-Sale, Amortized Cost 91 95
Securities held-to-maturity, Amortized Cost 6,781 7,209
Securities Held-To-Maturity, Credit Rating 6,781 7,209
Investments [Member] | Mortgage backed securities - residential [Member] | Obligations of U.S. government-sponsored enterprises [Member]    
Securities available-for-sale:    
Securities Available-For-Sale, Amortized Cost 16,003 12,652
Securities held-to-maturity, Amortized Cost 41,601 42,701
Securities Held-To-Maturity, Credit Rating 41,601 42,701
Securities held-to-maturity:    
Securities Available-For-Sale, Amortized Cost 16,003 12,652
Securities held-to-maturity, Amortized Cost 41,601 42,701
Securities Held-To-Maturity, Credit Rating 41,601 42,701
Obligations of U.S. government agencies:    
Securities Available-For-Sale, Amortized Cost 16,003 12,652
Securities held-to-maturity, Amortized Cost 41,601 42,701
Securities Held-To-Maturity, Credit Rating 41,601 42,701
Investments [Member] | Corporate securities [Member] | Obligations of U.S. government-sponsored enterprises [Member]    
Securities available-for-sale:    
Securities Available-For-Sale, Amortized Cost 6,500 4,000
Securities held-to-maturity, Amortized Cost 3,000 3,000
Securities Held-To-Maturity, Credit Rating 3,000 3,000
Securities held-to-maturity:    
Securities Available-For-Sale, Amortized Cost 6,500 4,000
Securities held-to-maturity, Amortized Cost 3,000 3,000
Securities Held-To-Maturity, Credit Rating 3,000 3,000
Obligations of U.S. government agencies:    
Securities Available-For-Sale, Amortized Cost 6,500 4,000
Securities held-to-maturity, Amortized Cost 3,000 3,000
Securities Held-To-Maturity, Credit Rating 3,000 3,000
Investments [Member] | Mortgage-backed securities - commercial [Member] | Obligations of U.S. government agencies [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost 4,024 4,268
Securities Held-To-Maturity, Credit Rating 4,024 4,268
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost 4,024 4,268
Securities Held-To-Maturity, Credit Rating 4,024 4,268
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost 4,024 4,268
Securities Held-To-Maturity, Credit Rating 4,024 4,268
Investments [Member] | Debt Securities [Member] | Obligations of U.S. government-sponsored enterprises [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost 10,500 19,000
Securities Held-To-Maturity, Credit Rating 10,500 19,000
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost 10,500 19,000
Securities Held-To-Maturity, Credit Rating 10,500 19,000
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost 10,500 19,000
Securities Held-To-Maturity, Credit Rating 10,500 19,000
Investments [Member] | Private label mortgage-backed securities - residential [Member] | Obligations of U.S. government-sponsored enterprises [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost 179 190
Securities Held-To-Maturity, Credit Rating 179 190
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost 179 190
Securities Held-To-Maturity, Credit Rating 179 190
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost 179 190
Securities Held-To-Maturity, Credit Rating 179 190
Investments [Member] | Obligations of state and political subdivisions [Member] | Obligations of U.S. government-sponsored enterprises [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost 3,435 3,448
Securities Held-To-Maturity, Credit Rating 3,435 3,448
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost 3,435 3,448
Securities Held-To-Maturity, Credit Rating 3,435 3,448
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost 3,435 3,448
Securities Held-To-Maturity, Credit Rating 3,435 3,448
Debt Securities [Member]    
Securities available-for-sale:    
Securities Available-For-Sale, Gross Unrealized Gains 208 77
Securities held-to-maturity, Gross Unrealized Gains 21 84
Securities Available-For-Sale, Gross Unrealized Losses (1,198) (1,208)
Securities held-to-maturity, Gross Unrealized Losses (6,950) (7,283)
Securities Available-For-Sale, Allowance for Credit Losses
Securities held-to-maturity, Allowance for Credit Losses
Securities Available-For-Sale, Fair Value 21,604 15,616
Securities held-to-maturity, Fair Value 62,591 72,617
Securities held-to-maturity:    
Securities Available-For-Sale, Gross Unrealized Gains 208 77
Securities held-to-maturity, Gross Unrealized Gains 21 84
Securities Available-For-Sale, Gross Unrealized Losses (1,198) (1,208)
Securities held-to-maturity, Gross Unrealized Losses (6,950) (7,283)
Securities Available-For-Sale, Allowance for Credit Losses
Securities held-to-maturity, Allowance for Credit Losses
Securities Available-For-Sale, Fair Value 21,604 15,616
Securities held-to-maturity, Fair Value 62,591 72,617
Total investment securities, Gross Unrealized Gains 229 161
Total investment securities, Gross Unrealized Losses (8,148) (8,491)
Total investment securities, Allowance for Credit Losses
Total investment securities, Fair Value 84,195 88,233
Obligations of U.S. government agencies:    
Securities Available-For-Sale, Gross Unrealized Gains 208 77
Securities held-to-maturity, Gross Unrealized Gains 21 84
Securities Available-For-Sale, Gross Unrealized Losses (1,198) (1,208)
Securities held-to-maturity, Gross Unrealized Losses (6,950) (7,283)
Securities Available-For-Sale, Allowance for Credit Losses
Securities held-to-maturity, Allowance for Credit Losses
Securities Available-For-Sale, Fair Value 21,604 15,616
Securities held-to-maturity, Fair Value 62,591 72,617
Debt Securities [Member] | Standard & Poor's, AAA/AA/A Rating [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost 69,520 79,816
Securities Held-To-Maturity, Credit Rating 69,520 79,816
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost 69,520 79,816
Securities Held-To-Maturity, Credit Rating 69,520 79,816
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost 69,520 79,816
Securities Held-To-Maturity, Credit Rating 69,520 79,816
Debt Securities [Member] | Standard & Poor's, BBB/BB/B Rating [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Debt Securities [Member] | Non-rated [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Debt Securities [Member] | Mortgage backed securities - residential [Member] | Obligations of U.S. government agencies [Member]    
Securities available-for-sale:    
Securities Available-For-Sale, Gross Unrealized Gains
Securities held-to-maturity, Gross Unrealized Gains
Securities Available-For-Sale, Gross Unrealized Losses (9) (6)
Securities held-to-maturity, Gross Unrealized Losses (687) (611)
Securities Available-For-Sale, Allowance for Credit Losses
Securities held-to-maturity, Allowance for Credit Losses
Securities Available-For-Sale, Fair Value 82 89
Securities held-to-maturity, Fair Value 6,094 6,598
Securities held-to-maturity:    
Securities Available-For-Sale, Gross Unrealized Gains
Securities held-to-maturity, Gross Unrealized Gains
Securities Available-For-Sale, Gross Unrealized Losses (9) (6)
Securities held-to-maturity, Gross Unrealized Losses (687) (611)
Securities Available-For-Sale, Allowance for Credit Losses
Securities held-to-maturity, Allowance for Credit Losses
Securities Available-For-Sale, Fair Value 82 89
Securities held-to-maturity, Fair Value 6,094 6,598
Obligations of U.S. government agencies:    
Securities Available-For-Sale, Gross Unrealized Gains
Securities held-to-maturity, Gross Unrealized Gains
Securities Available-For-Sale, Gross Unrealized Losses (9) (6)
Securities held-to-maturity, Gross Unrealized Losses (687) (611)
Securities Available-For-Sale, Allowance for Credit Losses
Securities held-to-maturity, Allowance for Credit Losses
Securities Available-For-Sale, Fair Value 82 89
Securities held-to-maturity, Fair Value 6,094 6,598
Debt Securities [Member] | Mortgage backed securities - residential [Member] | Obligations of U.S. government agencies [Member] | Standard & Poor's, AAA/AA/A Rating [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost 6,781 7,209
Securities Held-To-Maturity, Credit Rating 6,781 7,209
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost 6,781 7,209
Securities Held-To-Maturity, Credit Rating 6,781 7,209
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost 6,781 7,209
Securities Held-To-Maturity, Credit Rating 6,781 7,209
Debt Securities [Member] | Mortgage backed securities - residential [Member] | Obligations of U.S. government agencies [Member] | Standard & Poor's, BBB/BB/B Rating [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Debt Securities [Member] | Mortgage backed securities - residential [Member] | Obligations of U.S. government agencies [Member] | Non-rated [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Debt Securities [Member] | Mortgage backed securities - residential [Member] | Obligations of U.S. government-sponsored enterprises [Member]    
Securities available-for-sale:    
Securities Available-For-Sale, Gross Unrealized Gains 62 56
Securities held-to-maturity, Gross Unrealized Gains 1 4
Securities Available-For-Sale, Gross Unrealized Losses (1,189) (1,202)
Securities held-to-maturity, Gross Unrealized Losses (5,219) (5,194)
Securities Available-For-Sale, Allowance for Credit Losses
Securities held-to-maturity, Allowance for Credit Losses
Securities Available-For-Sale, Fair Value 14,876 11,506
Securities held-to-maturity, Fair Value 36,383 37,511
Securities held-to-maturity:    
Securities Available-For-Sale, Gross Unrealized Gains 62 56
Securities held-to-maturity, Gross Unrealized Gains 1 4
Securities Available-For-Sale, Gross Unrealized Losses (1,189) (1,202)
Securities held-to-maturity, Gross Unrealized Losses (5,219) (5,194)
Securities Available-For-Sale, Allowance for Credit Losses
Securities held-to-maturity, Allowance for Credit Losses
Securities Available-For-Sale, Fair Value 14,876 11,506
Securities held-to-maturity, Fair Value 36,383 37,511
Obligations of U.S. government agencies:    
Securities Available-For-Sale, Gross Unrealized Gains 62 56
Securities held-to-maturity, Gross Unrealized Gains 1 4
Securities Available-For-Sale, Gross Unrealized Losses (1,189) (1,202)
Securities held-to-maturity, Gross Unrealized Losses (5,219) (5,194)
Securities Available-For-Sale, Allowance for Credit Losses
Securities held-to-maturity, Allowance for Credit Losses
Securities Available-For-Sale, Fair Value 14,876 11,506
Securities held-to-maturity, Fair Value 36,383 37,511
Debt Securities [Member] | Mortgage backed securities - residential [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Standard & Poor's, AAA/AA/A Rating [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost 41,601 42,701
Securities Held-To-Maturity, Credit Rating 41,601 42,701
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost 41,601 42,701
Securities Held-To-Maturity, Credit Rating 41,601 42,701
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost 41,601 42,701
Securities Held-To-Maturity, Credit Rating 41,601 42,701
Debt Securities [Member] | Mortgage backed securities - residential [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Standard & Poor's, BBB/BB/B Rating [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Debt Securities [Member] | Mortgage backed securities - residential [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Non-rated [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Debt Securities [Member] | Corporate securities [Member] | Obligations of U.S. government-sponsored enterprises [Member]    
Securities available-for-sale:    
Securities Available-For-Sale, Gross Unrealized Gains 146 21
Securities held-to-maturity, Gross Unrealized Gains
Securities Available-For-Sale, Gross Unrealized Losses
Securities held-to-maturity, Gross Unrealized Losses (106) (234)
Securities Available-For-Sale, Allowance for Credit Losses
Securities held-to-maturity, Allowance for Credit Losses
Securities Available-For-Sale, Fair Value 6,646 4,021
Securities held-to-maturity, Fair Value 2,894 2,766
Securities held-to-maturity:    
Securities Available-For-Sale, Gross Unrealized Gains 146 21
Securities held-to-maturity, Gross Unrealized Gains
Securities Available-For-Sale, Gross Unrealized Losses
Securities held-to-maturity, Gross Unrealized Losses (106) (234)
Securities Available-For-Sale, Allowance for Credit Losses
Securities held-to-maturity, Allowance for Credit Losses
Securities Available-For-Sale, Fair Value 6,646 4,021
Securities held-to-maturity, Fair Value 2,894 2,766
Obligations of U.S. government agencies:    
Securities Available-For-Sale, Gross Unrealized Gains 146 21
Securities held-to-maturity, Gross Unrealized Gains
Securities Available-For-Sale, Gross Unrealized Losses
Securities held-to-maturity, Gross Unrealized Losses (106) (234)
Securities Available-For-Sale, Allowance for Credit Losses
Securities held-to-maturity, Allowance for Credit Losses
Securities Available-For-Sale, Fair Value 6,646 4,021
Securities held-to-maturity, Fair Value 2,894 2,766
Debt Securities [Member] | Corporate securities [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Standard & Poor's, AAA/AA/A Rating [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost 3,000 3,000
Securities Held-To-Maturity, Credit Rating 3,000 3,000
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost 3,000 3,000
Securities Held-To-Maturity, Credit Rating 3,000 3,000
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost 3,000 3,000
Securities Held-To-Maturity, Credit Rating 3,000 3,000
Debt Securities [Member] | Corporate securities [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Standard & Poor's, BBB/BB/B Rating [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Debt Securities [Member] | Corporate securities [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Non-rated [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Debt Securities [Member] | Mortgage-backed securities - commercial [Member] | Obligations of U.S. government agencies [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Gross Unrealized Gains 19 64
Securities held-to-maturity, Gross Unrealized Losses (7) (23)
Securities held-to-maturity, Allowance for Credit Losses
Securities held-to-maturity, Fair Value 4,036 4,309
Securities held-to-maturity:    
Securities held-to-maturity, Gross Unrealized Gains 19 64
Securities held-to-maturity, Gross Unrealized Losses (7) (23)
Securities held-to-maturity, Allowance for Credit Losses
Securities held-to-maturity, Fair Value 4,036 4,309
Obligations of U.S. government agencies:    
Securities held-to-maturity, Gross Unrealized Gains 19 64
Securities held-to-maturity, Gross Unrealized Losses (7) (23)
Securities held-to-maturity, Allowance for Credit Losses
Securities held-to-maturity, Fair Value 4,036 4,309
Debt Securities [Member] | Mortgage-backed securities - commercial [Member] | Obligations of U.S. government agencies [Member] | Standard & Poor's, AAA/AA/A Rating [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost 4,024 4,268
Securities Held-To-Maturity, Credit Rating 4,024 4,268
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost 4,024 4,268
Securities Held-To-Maturity, Credit Rating 4,024 4,268
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost 4,024 4,268
Securities Held-To-Maturity, Credit Rating 4,024 4,268
Debt Securities [Member] | Mortgage-backed securities - commercial [Member] | Obligations of U.S. government agencies [Member] | Standard & Poor's, BBB/BB/B Rating [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Debt Securities [Member] | Mortgage-backed securities - commercial [Member] | Obligations of U.S. government agencies [Member] | Non-rated [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Debt Securities [Member] | Debt Securities [Member] | Obligations of U.S. government-sponsored enterprises [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Gross Unrealized Gains 13
Securities held-to-maturity, Gross Unrealized Losses (560) (865)
Securities held-to-maturity, Allowance for Credit Losses
Securities held-to-maturity, Fair Value 9,940 18,148
Securities held-to-maturity:    
Securities held-to-maturity, Gross Unrealized Gains 13
Securities held-to-maturity, Gross Unrealized Losses (560) (865)
Securities held-to-maturity, Allowance for Credit Losses
Securities held-to-maturity, Fair Value 9,940 18,148
Obligations of U.S. government agencies:    
Securities held-to-maturity, Gross Unrealized Gains 13
Securities held-to-maturity, Gross Unrealized Losses (560) (865)
Securities held-to-maturity, Allowance for Credit Losses
Securities held-to-maturity, Fair Value 9,940 18,148
Debt Securities [Member] | Debt Securities [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Standard & Poor's, AAA/AA/A Rating [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost 10,500 19,000
Securities Held-To-Maturity, Credit Rating 10,500 19,000
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost 10,500 19,000
Securities Held-To-Maturity, Credit Rating 10,500 19,000
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost 10,500 19,000
Securities Held-To-Maturity, Credit Rating 10,500 19,000
Debt Securities [Member] | Debt Securities [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Standard & Poor's, BBB/BB/B Rating [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Debt Securities [Member] | Debt Securities [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Non-rated [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Debt Securities [Member] | Private label mortgage-backed securities - residential [Member] | Obligations of U.S. government-sponsored enterprises [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Gross Unrealized Gains
Securities held-to-maturity, Gross Unrealized Losses (3) (5)
Securities held-to-maturity, Allowance for Credit Losses
Securities held-to-maturity, Fair Value 176 185
Securities held-to-maturity:    
Securities held-to-maturity, Gross Unrealized Gains
Securities held-to-maturity, Gross Unrealized Losses (3) (5)
Securities held-to-maturity, Allowance for Credit Losses
Securities held-to-maturity, Fair Value 176 185
Obligations of U.S. government agencies:    
Securities held-to-maturity, Gross Unrealized Gains
Securities held-to-maturity, Gross Unrealized Losses (3) (5)
Securities held-to-maturity, Allowance for Credit Losses
Securities held-to-maturity, Fair Value 176 185
Debt Securities [Member] | Private label mortgage-backed securities - residential [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Standard & Poor's, AAA/AA/A Rating [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost 179 190
Securities Held-To-Maturity, Credit Rating 179 190
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost 179 190
Securities Held-To-Maturity, Credit Rating 179 190
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost 179 190
Securities Held-To-Maturity, Credit Rating 179 190
Debt Securities [Member] | Private label mortgage-backed securities - residential [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Standard & Poor's, BBB/BB/B Rating [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Debt Securities [Member] | Private label mortgage-backed securities - residential [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Non-rated [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Debt Securities [Member] | Obligations of state and political subdivisions [Member] | Obligations of U.S. government-sponsored enterprises [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Gross Unrealized Gains 1 3
Securities held-to-maturity, Gross Unrealized Losses (368) (351)
Securities held-to-maturity, Allowance for Credit Losses
Securities held-to-maturity, Fair Value 3,068 3,100
Securities held-to-maturity:    
Securities held-to-maturity, Gross Unrealized Gains 1 3
Securities held-to-maturity, Gross Unrealized Losses (368) (351)
Securities held-to-maturity, Allowance for Credit Losses
Securities held-to-maturity, Fair Value 3,068 3,100
Obligations of U.S. government agencies:    
Securities held-to-maturity, Gross Unrealized Gains 1 3
Securities held-to-maturity, Gross Unrealized Losses (368) (351)
Securities held-to-maturity, Allowance for Credit Losses
Securities held-to-maturity, Fair Value 3,068 3,100
Debt Securities [Member] | Obligations of state and political subdivisions [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Standard & Poor's, AAA/AA/A Rating [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost 3,435 3,448
Securities Held-To-Maturity, Credit Rating 3,435 3,448
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost 3,435 3,448
Securities Held-To-Maturity, Credit Rating 3,435 3,448
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost 3,435 3,448
Securities Held-To-Maturity, Credit Rating 3,435 3,448
Debt Securities [Member] | Obligations of state and political subdivisions [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Standard & Poor's, BBB/BB/B Rating [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Debt Securities [Member] | Obligations of state and political subdivisions [Member] | Obligations of U.S. government-sponsored enterprises [Member] | Non-rated [Member]    
Securities available-for-sale:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Securities held-to-maturity:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating
Obligations of U.S. government agencies:    
Securities held-to-maturity, Amortized Cost
Securities Held-To-Maturity, Credit Rating