Investment Securities (Tables)
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12 Months Ended |
Dec. 31, 2016 |
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| Investments, Debt and Equity Securities [Abstract] |
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| Available-for-sale and held-to-maturity securities [Table Text Block] |
Investment securities as of the balance sheet dates consisted of the following: | | | | | | | | | | | | | | December 31, 2016 | Amortized Cost | Gross Unrealized Gains | Gross Unrealized Losses | Fair Value | | (Dollars in thousands) | Available-for-sale | | | | | Debt securities: | | | | | U.S. Government-sponsored enterprises | $ | 10,221 |
| $ | 15 |
| $ | (196 | ) | $ | 10,040 |
| Agency MBS | 18,283 |
| 27 |
| (269 | ) | 18,041 |
| State and political subdivisions | 27,909 |
| 113 |
| (650 | ) | 27,372 |
| Corporate | 9,745 |
| 84 |
| (129 | ) | 9,700 |
| Total debt securities | 66,158 |
| 239 |
| (1,244 | ) | 65,153 |
| Mutual funds | 403 |
| — |
| — |
| 403 |
| Total | $ | 66,561 |
| $ | 239 |
| $ | (1,244 | ) | $ | 65,556 |
| Held-to-maturity | | | | | U.S. Government-sponsored enterprises | $ | 999 |
| $ | — |
| $ | — |
| $ | 999 |
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| | | | | | | | | | | | | | December 31, 2015 | Amortized Cost | Gross Unrealized Gains | Gross Unrealized Losses | Fair Value | | (Dollars in thousands) | Available-for-sale | | | | | Debt securities: | | | | | U.S. Government-sponsored enterprises | $ | 10,805 |
| $ | 30 |
| $ | (143 | ) | $ | 10,692 |
| Agency MBS | 11,083 |
| 39 |
| (64 | ) | 11,058 |
| State and political subdivisions | 19,653 |
| 404 |
| (25 | ) | 20,032 |
| Corporate | 12,266 |
| 76 |
| (359 | ) | 11,983 |
| Total debt securities | 53,807 |
| 549 |
| (591 | ) | 53,765 |
| Mutual funds | 345 |
| — |
| — |
| 345 |
| Total | $ | 54,152 |
| $ | 549 |
| $ | (591 | ) | $ | 54,110 |
| Held-to-maturity | | | | | U.S. Government-sponsored enterprises | $ | 5,217 |
| $ | — |
| $ | (101 | ) | $ | 5,116 |
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| Schedule of Unrealized Loss on Investments [Table Text Block] |
Information pertaining to all investment securities with gross unrealized losses as of the balance sheet dates, aggregated by investment category and length of time that individual securities have been in a continuous loss position, follows: | | | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2016 | Less Than 12 Months | 12 Months and Over | Total | | Number of Securities | Fair Value | Gross Unrealized Loss | Number of Securities | Fair Value | Gross Unrealized Loss | Number of Securities | Fair Value | Gross Unrealized Loss | | | (Dollars in thousands) | Debt securities: | | | | | | | | | | U.S. Government- sponsored enterprises | 13 |
| $ | 8,351 |
| $ | (180 | ) | 3 |
| $ | 1,172 |
| $ | (16 | ) | 16 |
| $ | 9,523 |
| $ | (196 | ) | Agency MBS | 22 |
| 15,141 |
| (261 | ) | 1 |
| 344 |
| (8 | ) | 23 |
| 15,485 |
| (269 | ) | State and political subdivisions | 40 |
| 16,481 |
| (650 | ) | — |
| — |
| — |
| 40 |
| 16,481 |
| (650 | ) | Corporate | 8 |
| 3,973 |
| (56 | ) | 4 |
| 1,627 |
| (73 | ) | 12 |
| 5,600 |
| (129 | ) | Total | 83 |
| $ | 43,946 |
| $ | (1,147 | ) | 8 |
| $ | 3,143 |
| $ | (97 | ) | 91 |
| $ | 47,089 |
| $ | (1,244 | ) |
| | | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2015 | Less Than 12 Months | 12 Months and Over | Total | | Number of Securities | Fair Value | Gross Unrealized Loss | Number of Securities | Fair Value | Gross Unrealized Loss | Number of Securities | Fair Value | Gross Unrealized Loss | | | (Dollars in thousands) | Debt securities: | | | | | | | | | | U.S. Government- sponsored enterprises | 12 |
| $ | 9,081 |
| $ | (157 | ) | 5 |
| $ | 3,607 |
| $ | (87 | ) | 17 |
| $ | 12,688 |
| $ | (244 | ) | Agency MBS | 12 |
| 7,459 |
| (58 | ) | 1 |
| 259 |
| (6 | ) | 13 |
| 7,718 |
| (64 | ) | State and political subdivisions | 4 |
| 1,512 |
| (14 | ) | 2 |
| 785 |
| (11 | ) | 6 |
| 2,297 |
| (25 | ) | Corporate | 12 |
| 5,750 |
| (277 | ) | 4 |
| 1,632 |
| (82 | ) | 16 |
| 7,382 |
| (359 | ) | Total | 40 |
| $ | 23,802 |
| $ | (506 | ) | 12 |
| $ | 6,283 |
| $ | (186 | ) | 52 |
| $ | 30,085 |
| $ | (692 | ) |
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| Schedule of Realized Gain (Loss) [Table Text Block] |
The following table presents the proceeds, gross gains and gross losses from sales of available-for-sale securities: | | | | | | | | | | | | For The Years Ended December 31, | | 2016 | 2015 | 2014 | | (Dollars in thousands) | Proceeds | $ | 6,620 |
| $ | 11,540 |
| $ | 7,420 |
| Gross gains | 131 |
| 66 |
| 393 |
| Gross losses | (60 | ) | (13 | ) | (78 | ) | Net gains | $ | 71 |
| $ | 53 |
| $ | 315 |
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| Investments Classified by Contractual Maturity Date [Table Text Block] |
The amortized cost and estimated fair value of debt securities by contractual scheduled maturity as of December 31, 2016, were as follows: | | | | | | | | | Amortized Cost | Fair Value | | (Dollars in thousands) | Available-for-sale | | | Due in one year or less | $ | 627 |
| $ | 631 |
| Due from one to five years | 5,834 |
| 5,882 |
| Due from five to ten years | 24,063 |
| 23,768 |
| Due after ten years | 17,351 |
| 16,831 |
| | 47,875 |
| 47,112 |
| Agency MBS | 18,283 |
| 18,041 |
| Total debt securities available-for-sale | $ | 66,158 |
| $ | 65,153 |
| Held-to-maturity | | | Due from one to five years | $ | 999 |
| $ | 999 |
| Total debt securities held-to-maturity | $ | 999 |
| $ | 999 |
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