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Fair Value Disclosures (Narrative Disclosures) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract]
Fair value, assets, level 1 to level 2 transfers	$ 0	$ 0
Fair value, assets, level 2 to Level 1 transfers	0	0
Fair value, assets, transfers into level 3	0	0
Fair value, assets, transfers out of level 3	0	0
Fair value, liabilities, transfers out of level 3	0	0
Fair value, liabilities, level 1 to level 2 transfers	0	0
Fair value, liabilities, level 2 to level 1 transfers	0	0
Fair value, liabilities, transfers into level 3	$ 0	0
Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Quantification of unobservable inputs for level 3 values for impaired loans	10.00%
Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Quantification of unobservable inputs for level 3 values for impaired loans	50.00%
Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Quantification of unobservable inputs for level 3 values for impaired loans	23.00%
Fair value on a non-recurring basis | Impaired loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure	$ 17,696,000	15,706,000
Fair value on a non-recurring basis | Foreclosed properties
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure	2,547,000	2,547,000
Fair value on a non-recurring basis | Fair Value Measurements - Level 3 Inputs | Impaired loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure	17,696,000	15,706,000
Fair value on a non-recurring basis | Fair Value Measurements - Level 3 Inputs | Foreclosed properties
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure	$ 2,547,000	$ 2,547,000

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
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Amount of transfers of financial instrument classified as a liability into level 3 of the fair value hierarchy.

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Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.

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