Fair Value Disclosures - Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Securities available for sale
Securities available for sale	$ 183,184	$ 250,603
Equity securities
Equity securities	5,025	5,006
Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	183,184	250,603
Mutual Fund
Equity securities
Equity securities	5,025	5,006
Mutual Fund \| Fair Value, Measurements, Recurring [Member]
Equity securities
Equity securities	5,025	5,006
US Government Agency Obligations [Member]
Securities available for sale
Securities available for sale	95,665	109,890
US Government Agency Obligations [Member] \| Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	95,665	109,890
U.S. Treasury Notes \| Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	1,911	1,934
Mortgage-backed Securities, Residential
Securities available for sale
Securities available for sale	30,238	33,663
Mortgage-backed Securities, Residential \| Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	30,238	33,663
Asset Backed Securities
Securities available for sale
Securities available for sale	10,666	11,845
Asset Backed Securities \| Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	10,666	11,845
State and Municipal
Securities available for sale
Securities available for sale	35,613	74,391
State and Municipal \| Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	35,613	74,391
Corporate Bonds
Securities available for sale
Securities available for sale	5,754	15,320
Corporate Bonds \| Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	5,754	15,320
SBA Pooled Securities
Securities available for sale
Securities available for sale	3,337	3,560
SBA Pooled Securities \| Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	3,337	3,560
Level 1 \| Mutual Fund \| Fair Value, Measurements, Recurring [Member]
Equity securities
Equity securities	5,025	5,006
Level 2 \| Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	183,184	250,603
Level 2 \| US Government Agency Obligations [Member] \| Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	95,665	109,890
Level 2 \| U.S. Treasury Notes \| Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	1,911	1,934
Level 2 \| Mortgage-backed Securities, Residential \| Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	30,238	33,663
Level 2 \| Asset Backed Securities \| Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	10,666	11,845
Level 2 \| State and Municipal \| Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	35,613	74,391
Level 2 \| Corporate Bonds \| Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	5,754	15,320
Level 2 \| SBA Pooled Securities \| Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	$ 3,337	$ 3,560