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Securities - Unrealized Losses (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Amortized cost and fair values of securities |  |
Less than 12 Months | $ 924 | $ 499
12 Months or More | 2,800 | 3,232
Total | 3,724 | 3,731
Unrealized loss of securities |  |
Less than 12 Months, Unrealized Loss | (6) | (1)
12 Months or More | (66) | (28)
Unrealized Loss | 72 | 29
Mortgage Backed Securities Residential [Member] |  |
Amortized cost and fair values of securities |  |
Less than 12 Months | 924 | 0
12 Months or More | 1,004 | 1,149
Total | 1,928 | 1,149
Unrealized loss of securities |  |
Less than 12 Months, Unrealized Loss | (6) | 0
12 Months or More | (55) | (17)
Unrealized Loss | 61 | 17
Collateralized mortgage obligations - residential [Member] |  |
Amortized cost and fair values of securities |  |
Less than 12 Months | 0 | 0
12 Months or More | 1,796 | 2,083
Total | 1,796 | 2,083
Unrealized loss of securities |  |
Less than 12 Months, Unrealized Loss | 0 | 0
12 Months or More | (11) | (11)
Unrealized Loss | $ 11 | 11
Equity Funds [Member] |  |
Amortized cost and fair values of securities |  |
Less than 12 Months |  | 499
12 Months or More |  | 0
Total |  | 499
Unrealized loss of securities |  |
Less than 12 Months, Unrealized Loss |  | (1)
12 Months or More |  | 0
Unrealized Loss |  | $ 1

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