Loans and Leases (Loans and Advances to Directors, Executive Officers and Their Affiliates) (Details) - Directors, executive officers and their affiliates - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Change in the total amounts of loans and advances, all of which were performing
Balance at beginning of year	$ 46,771	$ 47,941
New loans granted during the year	34	2,842
Loans reclassified as insider loans	16,800	0
Advances on lines of credit	8,652	193
Repayments	(1,857)	(4,205)
Balance at end of year	$ 70,400	$ 46,771