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Disclosures about Fair Value Measurements and Financial Instruments (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Available for sale, at fair value | $ 135,855 | $ 129,138
Fair value swap asset | 657 | 92
Fair value swap liability | (657) | (92)
U.S. Agency Securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Available for sale, at fair value | 6,530 | 6,572
Municipal securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Available for sale, at fair value | 10,392 | 7,036
Corporate Bond Securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Available for sale, at fair value | 36,296 | 35,784
U.S. Agency mortgage-backed securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Available for sale, at fair value | 82,637 | 79,746
Level 1 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value swap asset | 0 | 0
Fair value swap liability | 0 | 0
Level 1 [Member] | U.S. Agency Securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Available for sale, at fair value | 0 | 0
Level 1 [Member] | Municipal securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Available for sale, at fair value | 0 | 0
Level 1 [Member] | Corporate Bond Securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Available for sale, at fair value | 0 | 0
Level 1 [Member] | U.S. Agency mortgage-backed securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Available for sale, at fair value | 0 | 0
Level 2 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value swap asset | 657 | 92
Fair value swap liability | (657) | (92)
Level 2 [Member] | U.S. Agency Securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Available for sale, at fair value | 6,530 | 6,572
Level 2 [Member] | Municipal securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Available for sale, at fair value | 10,392 | 7,036
Level 2 [Member] | Corporate Bond Securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Available for sale, at fair value | 36,296 | 35,784
Level 2 [Member] | U.S. Agency mortgage-backed securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Available for sale, at fair value | 82,637 | 79,746
Level 3 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value swap asset | 0 | 0
Fair value swap liability | 0 | 0
Level 3 [Member] | U.S. Agency Securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Available for sale, at fair value | 0 | 0
Level 3 [Member] | Municipal securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Available for sale, at fair value | 0 | 0
Level 3 [Member] | Corporate Bond Securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Available for sale, at fair value | 0 | 0
Level 3 [Member] | U.S. Agency mortgage-backed securities [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Available for sale, at fair value | $ 0 | $ 0

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