| Investment Securities - Trading | 6 Months Ended | 
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| Jun. 30, 2018 | |
| Investments, Debt and Equity Securities [Abstract] | |
| Investment Securities - Trading | Investment Securities - Trading 
The Company’s trading securities portfolio totaled $1.5 million at June 30, 2018, and $2.0 million at December 31, 2017, and generated gains of $34,000 and $51,000 for the three months ended June 30, 2018 and 2017, respectively, and $34,000 and $102,000 for the six months ended June 30, 2018 and 2017, respectively.
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- References No definition available. 
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- Definition The entire disclosure for investments in certain debt and equity securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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