Securities (Schedule of Information Regarding Securities with Unrealized Losses) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Securities in an Unrealized Loss Position for Less than 12 Months
Fair Value, AFS and HTM	$ 128,724	$ 108,745
Unrealized Losses, AFS and HTM	627	863
Securities in an Unrealized Loss Position for More than 12 Months
Fair Value, AFS and HTM	120,429	320,445
Unrealized Losses, AFS and HTM	1,116	13,561
Total
Fair Value, AFS and HTM	249,153	429,190
Unrealized Losses, AFS and HTM	1,743	14,424
Government-sponsored enterprise securities
Securities in an Unrealized Loss Position for Less than 12 Months
Fair Value, AFS	4,998	4,921
Unrealized Losses, AFS	2	78
Securities in an Unrealized Loss Position for More than 12 Months
Fair Value, AFS	0	13,682
Unrealized Losses, AFS	0	318
Total
Fair Value, AFS	4,998	18,603
Unrealized Losses, AFS	2	396
Mortgage-backed securities
Securities in an Unrealized Loss Position for Less than 12 Months
Fair Value, AFS and HTM	123,726	82,525
Unrealized Losses, AFS and HTM	625	351
Securities in an Unrealized Loss Position for More than 12 Months
Fair Value, AFS and HTM	118,579	294,305
Unrealized Losses, AFS and HTM	1,024	12,939
Total
Fair Value, AFS and HTM	242,305	376,830
Unrealized Losses, AFS and HTM	1,649	13,290
Corporate bonds
Securities in an Unrealized Loss Position for Less than 12 Months
Fair Value, AFS	0	20,704
Unrealized Losses, AFS	0	433
Securities in an Unrealized Loss Position for More than 12 Months
Fair Value, AFS	910	5,817
Unrealized Losses, AFS	90	256
Total
Fair Value, AFS	910	26,521
Unrealized Losses, AFS	90	689
State and local governments
Securities in an Unrealized Loss Position for Less than 12 Months
Fair Value, HTM	0	595
Unrealized Losses, HTM	0	1
Securities in an Unrealized Loss Position for More than 12 Months
Fair Value, HTM	940	6,641
Unrealized Losses, HTM	2	48
Total
Fair Value, HTM	940	7,236
Unrealized Losses, HTM	$ 2	$ 49