| Dec 31, 2011 | Dec 31, 2012 | Dec 31, 2013 | Dec 31, 2014 | Dec 31, 2015 | Dec 31, 2016 | Dec 31, 2017 | Dec 31, 2018 | Dec 31, 2019 | Dec 31, 2020 | Dec 31, 2021 | Dec 31, 2022 | Dec 31, 2023 | Dec 31, 2024 |
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| Net Income | 4 | 4 | 5 | 6 | 5 | 7 | 7 | 9 | 10 | 10 | 11 | 12 | 13 | 12 |
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| Amortization of premiums and accretion of discounts on securities, net | -1 | -1 | -1 | -1 | -1 | -1 | -2 | -2 | -2 | -2 | -2 | -2 | -2 | -1 |
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| Depreciation and amortization expense | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
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| Deferred income taxes | 0 | -0 | 0 | 0 | 1 | 0 | 0 | -0 | 0 | -0 | -0 | -0 | -1 | -1 |
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| Stock compensation expense | - | - | - | - | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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| Increase in cash value of life insurance | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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| Gain on sale of securities | - | - | - | - | - | - | - | -0 | -0 | - | 0 | - | 0 | 0 |
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| Provision for credit losses | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 |
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| Proceeds from sales of loans | - | - | - | 30 | 33 | 51 | 67 | 55 | 71 | 143 | 136 | 52 | 32 | 34 |
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| Loans originated for sale | - | - | - | 29 | 34 | 52 | 63 | 54 | 71 | 144 | 128 | 49 | 32 | 33 |
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| Gain on sale of loans | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 2 | 1 | 0 | 1 |
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| Amortization of tax credit investment | - | - | - | - | - | - | - | 0 | 0 | 0 | 0 | 0 | 2 | 2 |
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| Unrealized loss on equity securities | - | - | - | - | - | - | - | -0 | 0 | -0 | 0 | -0 | -0 | -0 |
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| Net realized and unrealized gain on foreclosed real estate | - | - | - | - | -0 | -0 | -0 | -0 | -0 | -0 | -0 | 0 | - | - |
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| Gain on sale of premises and equipment | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 |
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| Decrease (increase) in accrued interest receivable | -0 | -0 | -0 | -0 | -0 | 0 | 0 | 0 | 0 | 0 | -0 | 1 | 1 | -0 |
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| Increase in accrued interest payable | -0 | -0 | -0 | -0 | -0 | -0 | -0 | 0 | 0 | -0 | - | 0 | 1 | 1 |
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| Net change in other assets/liabilities | -0 | -2 | -0 | 0 | 0 | 0 | -0 | 0 | 0 | -0 | -2 | 1 | 4 | -4 |
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| Net Cash Provided By Operating Activities | 9 | 7 | 10 | - | - | - | 13 | 13 | 14 | 12 | 22 | 17 | 14 | 22 |
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| Net decrease (increase) in interest-bearing time deposits | - | - | - | - | - | - | - | - | - | - | -2 | -1 | 0 | -1 |
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| Purchase of securities available for sale | - | - | - | - | - | - | - | - | - | - | 252 | 94 | 37 | 62 |
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| Purchase of securities held to maturity | - | - | - | - | - | - | - | - | - | - | 2 | 5 | - | - |
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| Proceeds from maturities of securities available for sale | - | - | - | - | - | - | - | - | 31 | 33 | 42 | 8 | 38 | 63 |
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| Proceeds from sales of securities available for sale | - | - | - | - | - | - | - | - | - | - | 2 | - | 21 | 19 |
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| Principal collected on mortgage-backed obligations | 10 | 15 | 13 | 11 | 13 | 20 | 26 | 25 | 30 | 47 | 36 | 22 | 16 | 28 |
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| Proceeds from sale of equity securities | - | - | - | - | - | - | - | - | - | - | - | - | 0 | - |
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| Net increase in loans receivable | -16 | 7 | 9 | 12 | 4 | 24 | 30 | 26 | 34 | 36 | -17 | 76 | 58 | 18 |
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| Investment in tax credit entities | - | - | - | - | - | - | - | 1 | 1 | 1 | 0 | - | 2 | 2 |
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| Investment in technology fund | - | - | - | - | - | - | - | - | - | - | 0 | 0 | 0 | 0 |
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| Proceeds from sale of foreclosed real estate | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 3 | 0 | 0 | 0 | 0 | - |
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| us-gaap_ProceedsFromFederalHomeLoanBankAdvances | - | - | - | - | - | - | 27 | - | - | - | - | 0 | - | - |
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| Proceeds from sale of premises and equipment | - | - | - | - | 0 | 0 | 0 | - | - | - | 0 | - | - | 0 |
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| Purchase of premises and equipment | 1 | 1 | 0 | 1 | 1 | 2 | 1 | 0 | 3 | 1 | 0 | 0 | 1 | 1 |
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| Net Cash Provided By (Used In) Investing Activities | 7 | -19 | -3 | - | - | - | -40 | -22 | -21 | -62 | -156 | -144 | -24 | 29 |
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| Net increase (decrease) in deposits | -14 | 20 | -11 | 39 | 15 | 27 | -0 | 37 | 21 | 178 | 135 | 25 | -35 | 41 |
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| Advances from FHLB and BTFP | 1 | - | 6 | 10 | 16 | - | - | - | - | - | - | - | 355 | 168 |
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| Repayment of advances from the FHLB and BTFP | - | - | - | - | - | - | - | - | - | - | - | - | -333 | -189 |
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| Purchase of treasury stock | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - | 1 | 0 |
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| Taxes paid on stock award shares for employees | - | - | - | - | - | - | - | - | 0 | 0 | 0 | 0 | 0 | 0 |
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| Dividends paid | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 |
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| Net Cash Provided By (Used In) Financing Activities | -19 | 16 | -17 | - | - | - | 7 | 24 | 17 | 175 | 131 | 21 | -18 | 16 |
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| Net Increase (Decrease) in Cash and Cash Equivalents | - | - | - | - | - | - | - | - | - | 125 | -3 | -106 | -28 | 67 |
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