Segment Information (Segment Financial Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net Interest Income	$ 160,830	$ 155,243	$ 145,225
Net Gains on Sales of Loans	8,267	9,908	4,633
Net Gains on Securities	2,247	4,081	1,248
Wealth Management and Investment Services Income	10,321	8,005	7,278
Insurance Revenues	9,268	8,922	8,940
Noncash Items:
Provision for Credit Losses	(6,500)	17,550	5,325
Depreciation and Amortization	8,770	9,429	8,630
Income Tax Expense (Benefit)	18,648	12,834	12,017
Segment Profit (Loss)	84,137	62,210	59,222
Segment Assets	5,608,539	4,977,577	4,397,672
Operating Segments | Core Banking
Segment Reporting Information [Line Items]
Net Interest Income	163,395	157,936	147,735
Net Gains on Sales of Loans	8,267	9,908	4,633
Net Gains on Securities	2,247	4,081	1,248
Wealth Management and Investment Services Income	4	3	4
Insurance Revenues	14	12	25
Noncash Items:
Provision for Credit Losses	(6,500)	17,550	5,325
Depreciation and Amortization	8,346	9,012	8,265
Income Tax Expense (Benefit)	18,774	13,758	12,724
Segment Profit (Loss)	82,066	60,812	58,793
Segment Assets	5,595,721	4,963,655	4,381,945
Operating Segments | Wealth Management Services
Segment Reporting Information [Line Items]
Net Interest Income	42	18	15
Net Gains on Sales of Loans	0	0	0
Net Gains on Securities	0	0	0
Wealth Management and Investment Services Income	10,317	8,002	7,274
Insurance Revenues	7	15	28
Noncash Items:
Provision for Credit Losses	0	0	0
Depreciation and Amortization	46	28	6
Income Tax Expense (Benefit)	826	452	469
Segment Profit (Loss)	2,543	1,355	1,366
Segment Assets	6,115	4,480	3,670
Operating Segments | Insurance
Segment Reporting Information [Line Items]
Net Interest Income	11	11	18
Net Gains on Sales of Loans	0	0	0
Net Gains on Securities	0	0	0
Wealth Management and Investment Services Income	0	0	0
Insurance Revenues	9,247	8,895	8,887
Noncash Items:
Provision for Credit Losses	0	0	0
Depreciation and Amortization	57	68	71
Income Tax Expense (Benefit)	652	536	511
Segment Profit (Loss)	2,034	1,655	1,538
Segment Assets	12,245	10,263	9,080
Other
Segment Reporting Information [Line Items]
Net Interest Income	(2,618)	(2,722)	(2,543)
Net Gains on Sales of Loans	0	0	0
Net Gains on Securities	0	0	0
Wealth Management and Investment Services Income	0	0	0
Insurance Revenues	0	0	0
Noncash Items:
Provision for Credit Losses	0	0	0
Depreciation and Amortization	321	321	288
Income Tax Expense (Benefit)	(1,604)	(1,912)	(1,687)
Segment Profit (Loss)	(2,506)	(1,612)	(2,475)
Segment Assets	$ (5,542)	$ (821)	$ 2,977