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Fair Value of Assets and Liabilities (Details) - Summary of quantitative information about unobservable inputs used in recurring and nonrecurring - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Collateral Dependent Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 2,354	$ 2,527
Valuation technique	Market comparable properties	Market comparable properties
Unobservable inputs	Comparability adjustments (%)	Comparability adjustments (%)
Range (weighted average)	2 - 41% (17)	2 - 62% (28)
Mortgage Servicing Rights [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 8,211	$ 5,084
Valuation technique	Discounted cash flow	Discounted cash flow
Unobservable inputs	Discount Rate	Discount Rate
Range (weighted average)	9.10%	9.36%
Constant Prepayment Rate [Member] | Mortgage Servicing Rights [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable inputs	Constant prepayment rate	Constant prepayment rate
Range (weighted average)	16.56%	10.19%
P and I Earnings Credit [Member] | Mortgage Servicing Rights [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 726	$ 55
Valuation technique	Discounted cash flow	Discounted cash flow
Unobservable inputs	P&I earnings credit	P&I earnings credit
Range (weighted average)	0.92%	1.78%
T and I Earnings Credit [Member] | Mortgage Servicing Rights [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable inputs	T&I earnings credit	T&I earnings credit
Range (weighted average)	1.23%	1.93%
Inflation for cost of servicing [Member] | Mortgage Servicing Rights [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable inputs	Inflation for cost of servicing	Inflation for cost of servicing
Range (weighted average)	1.50%	1.50%

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- Definition

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- Definition

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- Definition

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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=117815213&loc=d3e19207-110258

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