Disclosures about Fair Value of Assets and Liabilities (Details 2) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Collateral-dependent impaired loans [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Fair Value	$ 1,027	$ 982
Valuation technique	Market comparable properties	Market comparable properties
Collateral-dependent impaired loans [Member] \| Comparability adjustments percent [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Unobservable inputs	Comparability adjustments (%)	Comparability adjustments (%)
Range (weighted-average), minimum	20.00%
Range (weighted-average), maximum	35.00%
Mortgage servicing rights [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Fair Value	$ 3,191	$ 1,490
Valuation technique	Discounted cash flow	Discounted cash flow
Mortgage servicing rights [Member] \| Discount Rate [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Unobservable inputs	Discount Rate	Discount Rate
Range (weighted-average), maximum	10.30%	9.65%
Mortgage servicing rights [Member] \| Constant prepayment rate [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Unobservable inputs	Constant prepayment rate	Constant prepayment rate
Range (weighted-average), maximum	7.02%	7.51%
Mortgage servicing rights [Member] \| T&I earnings credit [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Unobservable inputs	T&I earnings credit	T&I earnings credit
Range (weighted-average), maximum	3.02%	2.13%
Mortgage servicing rights [Member] \| P&I earnings credit [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Unobservable inputs	P&I earnings credit	P&I earnings credit
Range (weighted-average), maximum	2.51%	1.56%
Mortgage servicing rights [Member] \| Inflation for cost of servicing [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Unobservable inputs	Inflation for cost of servicing	Inflation for cost of servicing
Range (weighted-average), maximum	1.50%	1.50%

Fair Value Input Interest Minimum Rate.

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- Definition

Reflects the interest rate percentage.

+ References

No definition available.

+ Details

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- Definition

Description of the inputs and valuation technique(s) used to measure fair value.

+ References

No definition available.

+ Details

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- Definition

Description of the unobservable inputs used in the valuation of investment assets by the entity.

+ References

No definition available.

+ Details

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- Definition

Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements.

+ References

No definition available.

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- Definition

Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

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