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Investment Securities (Details) | 12 Months Ended
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Dec. 31, 2017 USD ($) security | Dec. 31, 2016 USD ($)
Schedule of Available-for-sale Securities |  |
Impairment charges to securities | $ 0 | $ 0
Credit related impairment loss on securities | 0 | 0
Proceeds from sales of available for sale securities | 956,255 | 5,265,658
Total Unrealized Loss | 1,282,000 | 1,448,000
Total Fair Value | 60,829,000 | 72,883,000
Realized gain on sale | 1,406 | 21,653
Realized loss on sale | 0 | 19,237
Income tax expense relating to net gains on sales of investment securities | $ 555 | $ 953
Percentage of income tax expense relating to net gains on sale of investment securities | 39.44% | 39.44%
Interest rate swap |  |
Schedule of Available-for-sale Securities |  |
Investment securities pledged as collateral | $ 800,000 | $ 0
U.S. Government agency securities |  |
Schedule of Available-for-sale Securities |  |
Number of securities continuous unrealized loss position more than twelve months | security | 5 |
Total Unrealized Loss | $ 46,000 | 17,000
Total Fair Value | 3,480,000 | 986,000
Collaterized mortgage obligations |  |
Schedule of Available-for-sale Securities |  |
Debt securities | $ 0 | 0
Number of securities continuous unrealized loss position more than twelve months | security | 51 |
Total Unrealized Loss | $ 570,000 | 422,000
Total Fair Value | $ 22,209,000 | 27,019,000
Agency mortgage-backed securities |  |
Schedule of Available-for-sale Securities |  |
Number of securities continuous unrealized loss position more than twelve months | security | 39 |
Total Unrealized Loss | $ 500,000 | 429,000
Total Fair Value | $ 25,020,000 | 25,678,000
U.S. Treasury securities |  |
Schedule of Available-for-sale Securities |  |
Number of securities continuous unrealized loss position more than twelve months | security | 3 |
Total Unrealized Loss | $ 7,000 |
Total Fair Value | $ 1,494,000 |
Municipal securities |  |
Schedule of Available-for-sale Securities |  |
Number of securities continuous unrealized loss position more than twelve months | security | 16 |
Total Unrealized Loss | $ 159,000 | 580,000
Total Fair Value | 8,626,000 | 19,200,000
Private Label Mortgage-Backed securities |  |
Schedule of Available-for-sale Securities |  |
Debt securities | $ 0 | $ 0

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