Fair Value of Assets and Liabilities (Details 2) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2019	Dec. 31, 2018
Collateral-dependent impaired loans [Member] \| Comparability Adjustments Percent [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	$ 530	$ 1,027
Fair Value Measurements, Valuation Technique	Market comparable properties	Market comparable properties
Fair Value Measurements, Unobservable Inputs	Comparability adjustments (%)	Comparability adjustments (%)
Fair Value Measurements, Weighted Ave Range	16.00%
Fair Value Measurements, Range		29.00%
Mortgage servicing rights [Member] \| Discount Rate [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	$ 5,311	$ 3,191
Fair Value Measurements, Valuation Technique	Discounted cash flow	Discounted cash flow
Fair Value Measurements, Unobservable Inputs	Discount Rate	Discount Rate
Fair Value Measurements, Weighted Ave Range	9.18%
Fair Value Measurements, Range		10.30%
Mortgage servicing rights [Member] \| Constant Prepayment Rate [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Fair Value Measurements, Unobservable Inputs	Constant prepayment rate	Constant prepayment rate
Fair Value Measurements, Weighted Ave Range	11.64%
Fair Value Measurements, Range		7.02%
Mortgage servicing rights [Member] \| P and I Earnings Credit [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Fair Value Measurements, Unobservable Inputs	P&I earnings credit	P&I earnings credit
Fair Value Measurements, Weighted Ave Range	1.85%
Fair Value Measurements, Range		2.51%
Mortgage servicing rights [Member] \| T and I Earnings Credit [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Fair Value Measurements, Unobservable Inputs	T&I earnings credit	T&I earnings credit
Fair Value Measurements, Weighted Ave Range	2.11%
Fair Value Measurements, Range		3.02%
Mortgage servicing rights [Member] \| Inflation for cost of servicing [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Fair Value Measurements, Unobservable Inputs	Inflation for cost of servicing	Inflation for cost of servicing
Fair Value Measurements, Weighted Ave Range	1.50%
Fair Value Measurements, Range		1.50%
Minimum [Member] \| Collateral-dependent impaired loans [Member] \| Comparability Adjustments Percent [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Fair Value Measurements, Weighted Ave Range	10.00%
Fair Value Measurements, Range		20.00%
Maximum [Member] \| Collateral-dependent impaired loans [Member] \| Comparability Adjustments Percent [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Fair Value Measurements, Weighted Ave Range	35.00%
Fair Value Measurements, Range		35.00%

Reflects the interest rate percentage.

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+ References

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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=117815213&loc=d3e19207-110258

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