Reportable Segments (Schedule of financial information for each reportable segment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Interest income	$ 22,731	$ 23,991	$ 45,544	$ 47,856
Interest expense	1,301	4,217	2,841	9,986
Net interest income (loss)	21,430	19,774	42,703	37,870
Provision for loan losses	(1,900)	10,200	(2,200)	16,200
Noninterest income	3,622	9,207	9,526	13,125
Noninterest expense	13,495	12,644	27,657	25,016
Net income (loss) before taxes	13,457	6,137	26,772	9,779
Income tax provision (benefit)	3,134	1,459	6,083	2,269
Net income (loss)	10,323	4,678	20,689	7,510
Total assets	2,650,183	2,482,295	2,650,183	2,482,295	$ 2,482,587
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Interest income	(4)	(6)	(8)	(10)
Interest expense	(4)	(6)	(8)	(10)
Net interest income (loss)
Provision for loan losses
Noninterest income
Noninterest expense
Net income (loss) before taxes
Income tax provision (benefit)
Net income (loss)
Total assets	(287,455)	(251,816)	(287,455)	(251,816)
Commercial And Retail Banking [Member]
Segment Reporting Information [Line Items]
Interest income	22,385	23,709	44,799	47,378
Interest expense	924	3,723	2,086	9,057
Net interest income (loss)	21,461	19,986	42,713	38,321
Provision for loan losses	(1,900)	10,200	(2,200)	16,200
Noninterest income	1,639	3,431	2,910	4,681
Noninterest expense	11,128	10,191	22,361	20,690
Net income (loss) before taxes	13,872	3,026	25,462	6,112
Income tax provision (benefit)	3,220	728	5,808	1,499
Net income (loss)	10,652	2,298	19,654	4,613
Total assets	2,607,640	2,435,095	2,607,640	2,435,095
Mortgage Banking [Member]
Segment Reporting Information [Line Items]
Interest income	346	282	745	478
Interest expense
Net interest income (loss)	346	282	745	478
Provision for loan losses
Noninterest income	1,983	5,776	6,616	8,444
Noninterest expense	2,264	2,368	5,131	4,175
Net income (loss) before taxes	65	3,690	2,230	4,747
Income tax provision (benefit)	15	775	468	997
Net income (loss)	50	2,915	1,762	3,750
Total assets	42,014	46,645	42,014	46,645
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Interest income	4	6	8	10
Interest expense	381	500	763	939
Net interest income (loss)	(377)	(494)	(755)	(929)
Provision for loan losses
Noninterest income
Noninterest expense	103	85	165	151
Net income (loss) before taxes	(480)	(579)	(920)	(1,080)
Income tax provision (benefit)	(101)	(44)	(193)	(227)
Net income (loss)	(379)	(535)	(727)	(853)
Total assets	$ 287,984	$ 252,371	$ 287,984	$ 252,371