Loans, Loan Ratings by Loan Class, Commercial (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Summary of Loan Ratings by Loan Class [Abstract]
Loans	$ 2,864,473	$ 2,733,370
Accrued interest included in total	8,994	8,347
Commercial [Member]
Summary of Loan Ratings by Loan Class [Abstract]
Loans	1,355,212	1,169,693
Accrued interest included in total	3,422	2,998
Commercial [Member] | Non-Watch 1-6 [Member]
Summary of Loan Ratings by Loan Class [Abstract]
Loans	1,295,357	1,096,471
Accrued interest included in total	3,267	2,763
Commercial [Member] | Watch 7-8 [Member]
Summary of Loan Ratings by Loan Class [Abstract]
Loans	50,340	67,420
Accrued interest included in total	116	205
Commercial [Member] | Substandard Accrual 9 [Member]
Summary of Loan Ratings by Loan Class [Abstract]
Loans	7,346	4,502
Accrued interest included in total	39	30
Commercial [Member] | Non-Accrual 10-11 [Member]
Summary of Loan Ratings by Loan Class [Abstract]
Loans	2,169	1,300
Accrued interest included in total	0	0
Commercial [Member] | Commercial and Industrial [Member]
Summary of Loan Ratings by Loan Class [Abstract]
Loans	764,252	564,871
Commercial [Member] | Commercial and Industrial [Member] | Non-Watch 1-6 [Member]
Summary of Loan Ratings by Loan Class [Abstract]
Loans	715,810	515,955
Commercial [Member] | Commercial and Industrial [Member] | Watch 7-8 [Member]
Summary of Loan Ratings by Loan Class [Abstract]
Loans	42,153	44,384
Commercial [Member] | Commercial and Industrial [Member] | Substandard Accrual 9 [Member]
Summary of Loan Ratings by Loan Class [Abstract]
Loans	4,674	3,967
Commercial [Member] | Commercial and Industrial [Member] | Non-Accrual 10-11 [Member]
Summary of Loan Ratings by Loan Class [Abstract]
Loans	1,615	565
Commercial [Member] | Commercial Real Estate [Member]
Summary of Loan Ratings by Loan Class [Abstract]
Loans	590,960	604,822
Commercial [Member] | Commercial Real Estate [Member] | Non-Watch 1-6 [Member]
Summary of Loan Ratings by Loan Class [Abstract]
Loans	579,547	580,516
Commercial [Member] | Commercial Real Estate [Member] | Watch 7-8 [Member]
Summary of Loan Ratings by Loan Class [Abstract]
Loans	8,187	23,036
Commercial [Member] | Commercial Real Estate [Member] | Substandard Accrual 9 [Member]
Summary of Loan Ratings by Loan Class [Abstract]
Loans	2,672	535
Commercial [Member] | Commercial Real Estate [Member] | Non-Accrual 10-11 [Member]
Summary of Loan Ratings by Loan Class [Abstract]
Loans	$ 554	$ 735