Securities (Schedule of Securities with Unrealized Losses) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months Fair Value	$ 93,898	$ 94,322
Less than 12 Months Unrealized Loss	(250)	(887)
12 Months or More Fair Value	155,989	405,289
12 Months or More Unrealized Loss	(1,555)	(13,192)
Total Fair Value	249,887	499,611
Total Unrealized Loss	(1,805)	(14,079)
Obligations of State and Political Subdivisions
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months Fair Value	4,631	37,936
Less than 12 Months Unrealized Loss	(9)	(286)
12 Months or More Fair Value	0	49,071
12 Months or More Unrealized Loss	0	(1,037)
Total Fair Value	4,631	87,007
Total Unrealized Loss	(9)	(1,323)
MBS/CMO
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months Fair Value	89,267	56,386
Less than 12 Months Unrealized Loss	(241)	(601)
12 Months or More Fair Value	155,989	356,218
12 Months or More Unrealized Loss	(1,555)	(12,155)
Total Fair Value	245,256	412,604
Total Unrealized Loss	$ (1,796)	$ (12,756)