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Fair Values of Financial Instruments (Quantitative Information about Level 3 Fair Value Measurements) (Details) - USD ($)
$ in Thousands

6 Months Ended

12 Months Ended

Jun. 30, 2018

Dec. 31, 2017

Impaired Loans [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Impaired Loans

$ 8,857

$ 10,369

Impaired Loans [Member] | Significant Unobservable Inputs (Level 3) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Impaired Loans

8,857

10,369

Other Real Estate Owned [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Other real estate owned

1,178

532

Other Real Estate Owned [Member] | Significant Unobservable Inputs (Level 3) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Other real estate owned

1,178

532

Appraisal of Collateral [Member] | Appraisal Adjustments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Impaired Loans [Member] | Significant Unobservable Inputs (Level 3) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Impaired Loans

$ 8,857

$ 10,369

Valuation Techniques

^[1]

Appraisal of collateral

Appraisal of collateral

Unobservable Input

^[2]

Appraisal adjustments

Appraisal adjustments

Appraisal of Collateral [Member] | Appraisal Adjustments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Impaired Loans [Member] | Minimum [Member] | Significant Unobservable Inputs (Level 3) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Range

0.00%

0.00%

Appraisal of Collateral [Member] | Appraisal Adjustments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Impaired Loans [Member] | Maximum [Member] | Significant Unobservable Inputs (Level 3) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Range

10.00%

10.00%

Appraisal of Collateral [Member] | Appraisal Adjustments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned [Member] | Significant Unobservable Inputs (Level 3) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Other real estate owned

$ 1,178

$ 532

Valuation Techniques

^[1]

Appraisal of collateral

Appraisal of collateral

Unobservable Input

^[2]

Appraisal adjustments

Appraisal adjustments

Appraisal of Collateral [Member] | Appraisal Adjustments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned [Member] | Minimum [Member] | Significant Unobservable Inputs (Level 3) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Range

0.00%

0.00%

Appraisal of Collateral [Member] | Appraisal Adjustments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned [Member] | Maximum [Member] | Significant Unobservable Inputs (Level 3) [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Range

10.00%

10.00%

[1]	Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various level 3 inputs which are not objectively determinable.
[2]	Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range of liquidation expenses and other appraisal adjustments are presented as a percent of the appraisal.

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Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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Description of significant assumptions used by management to measure fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-URI http://asc.fasb.org/subtopic&trid=2196772

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