Fair Value, Assets Measured on Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
With an allowance recorded	$ 25,160	$ 167
Allowance for Loan Losses Allocated	20,771	17
Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	4,389
Total losses for the period ended	0
Residential Real Estate | Closed-end 1-4 family
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
With an allowance recorded	643
Allowance for Loan Losses Allocated	17
Residential Real Estate | Closed-end 1-4 family | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
With an allowance recorded	626
Total losses for the period ended	0
Commercial and Industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
With an allowance recorded	24,517	167
Allowance for Loan Losses Allocated	20,754	17
Commercial and Industrial | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
With an allowance recorded	3,763	150
Total losses for the period ended	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential Real Estate | Closed-end 1-4 family | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
With an allowance recorded	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial and Industrial | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
With an allowance recorded	0	0
Significant Other Observable Inputs (Level 2) | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	3,650
Significant Other Observable Inputs (Level 2) | Residential Real Estate | Closed-end 1-4 family | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
With an allowance recorded	0
Significant Other Observable Inputs (Level 2) | Commercial and Industrial | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
With an allowance recorded	3,650	0
Significant Unobservable Inputs (Level 3) | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	739
Significant Unobservable Inputs (Level 3) | Residential Real Estate | Closed-end 1-4 family | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
With an allowance recorded	626
Significant Unobservable Inputs (Level 3) | Commercial and Industrial | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
With an allowance recorded	$ 113	$ 150