Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
INTEREST AND DIVIDEND INCOME
Interest and Fees on Loans	$ 81,647	$ 70,202	$ 62,823
Interest on Deposits at Banks	711	348	152
Interest and Dividends on Investment Securities:
Fully Taxable	8,582	7,884	7,934
Exempt from Federal Taxes	5,563	6,223	6,006
Total Interest and Dividend Income	96,503	84,657	76,915
INTEREST EXPENSE
Interest-Bearing Checking Accounts	1,618	1,510	1,280
Savings Deposits	3,457	1,371	932
Time Deposits over $250,000	1,183	282	187
Other Time Deposits	1,420	950	924
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	62	44	33
Federal Home Loan Bank Advances	3,779	2,083	1,340
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	966	766	660
Total Interest Expense	12,485	7,006	5,356
NET INTEREST INCOME	84,018	77,651	71,559
Provision for Loan Losses	2,607	2,736	2,033
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	81,411	74,915	69,526
NONINTEREST INCOME
Net (Loss) Gain on Securities Transactions	213	(448)	(22)
Insurance Commissions	7,888	8,612	8,668
Net Gain on Sales of Loans	135	546	821
Other Operating Income	1,324	927	1,113
Total Noninterest Income	28,949	27,645	27,832
NONINTEREST EXPENSE
Salaries and Employee Benefits	38,788	37,677	34,637
Occupancy Expenses, Net	9,787	9,560	9,402
FDIC Assessments	881	891	1,076
Other Operating Expense	15,599	14,577	14,494
Total Noninterest Expense	65,055	62,705	59,609
INCOME BEFORE PROVISION FOR INCOME TAXES	45,305	39,855	37,749
Provision for Income Taxes	9,026	10,529	11,215
NET INCOME	$ 36,279	$ 29,326	$ 26,534
Average Shares Outstanding:
Basic Shares, in Shares	14,408	14,310	14,206
Diluted Shares, in Shares	14,488	14,406	14,297
Per Common Share:
Basic Earnings, in USD Per Share	$ 2.52	$ 2.05	$ 1.87
Diluted Earnings, In USD Per Share	$ 2.50	$ 2.04	$ 1.86
Fiduciary and Trust
NONINTEREST INCOME
Income From Fiduciary Activities	$ 9,255	$ 8,417	$ 7,783
Deposit Account
NONINTEREST INCOME
Income From Fiduciary Activities	$ 10,134	$ 9,591	$ 9,469