Loans (Total Balance of all Purchase Credit Impaired Loans from Acquisitions) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Impaired loans	$ 8,029	$ 17,870
Commercial real estate
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Impaired loans	3,649	4,832
Commercial and industrial
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Impaired loans	2,923	11,652
Residential real estate
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Impaired loans	1,457	1,386
Acquired with deteriorated credit quality
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Unpaid Principal Balance	11,524	11,368
Impaired loans	6,096	5,973
Acquired with deteriorated credit quality | Commercial real estate
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Unpaid Principal Balance	6,732	6,597
Impaired loans	2,883	2,884
Acquired with deteriorated credit quality | Commercial and industrial
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Unpaid Principal Balance	713	556
Impaired loans	291	135
Acquired with deteriorated credit quality | Residential real estate
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Unpaid Principal Balance	4,079	4,215
Impaired loans	$ 2,922	$ 2,954