Unobservable Inputs (Details) $ in Thousands	12 Months Ended
Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Fair Value, Assets, Quantitative Information [Line Items]
Debt Securities, Available-for-sale	$ 442,752	$ 447,498
Weighted Average [Member] \| Discounted cash flow methodology [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets, Quantitative Information [Line Items]
Cumulative Default	16.20%	12.40%
Loss Given Default	94.80%	94.30%
Cure Given Default	60.90%	60.90%
Pooled Trust Preferred Securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets, Quantitative Information [Line Items]
Debt Securities, Available-for-sale	$ 1,329	$ 1,640
Pooled Trust Preferred Securities [Member] \| Minimum [Member] \| Discounted cash flow methodology [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets, Quantitative Information [Line Items]
Cumulative Default	5.00%	5.00%
Loss Given Default	85.00%	85.00%
Cure Given Default	0.00%	0.00%
Pooled Trust Preferred Securities [Member] \| Maximum [Member] \| Discounted cash flow methodology [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets, Quantitative Information [Line Items]
Cumulative Default	100.00%	100.00%
Loss Given Default	100.00%	100.00%
Cure Given Default	75.00%	75.00%
Fair Value, Measurements, Recurring [Member] \| Impaired Loans [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	$ 29,109	$ 33,567
Fair Value, Measurements, Recurring [Member] \| Other real estate owned and other foreclosed assets \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	$ 0	$ 612
Measurement Input, Constant Prepayment Rate [Member] \| Weighted Average [Member] \| Discounted cash flow methodology [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets, Quantitative Information [Line Items]
Debt Securities, Available-for-sale, Measurement Input	0.021	0.025
Measurement Input, Constant Prepayment Rate [Member] \| Pooled Trust Preferred Securities [Member] \| Minimum [Member] \| Discounted cash flow methodology [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets, Quantitative Information [Line Items]
Debt Securities, Available-for-sale, Measurement Input	0	0
Measurement Input, Constant Prepayment Rate [Member] \| Pooled Trust Preferred Securities [Member] \| Maximum [Member] \| Discounted cash flow methodology [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets, Quantitative Information [Line Items]
Debt Securities, Available-for-sale, Measurement Input	0.59	0.61

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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Value of input used to measure investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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