Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest income
Interest and fees on loans	$ 84,529	$ 82,734	$ 82,951
Interest on interest-bearing deposits and federal funds sold	2,097	1,128	509
Interest and dividends on securities
U.S. government agencies and corporations	361	340	327
Mortgage-backed securities	2,089	1,491	1,235
Tax-exempt obligations of states and political subdivisions	2,725	3,214	3,742
Taxable obligations of states and political subdivisions	319	242	192
Corporate bonds and other	428	444	483
Total interest income	92,548	89,593	89,439
Interest expense
Savings and interest-bearing deposits	1,601	1,175	1,078
Time deposits	4,085	3,573	3,314
Borrowings	4,189	3,702	3,433
Trust preferred capital notes	1,152	1,151	1,143
Total interest expense	11,027	9,601	8,968
Net interest income	81,521	79,992	80,471
Provision for loan losses	11,006	16,435	18,040
Net interest income after provision for loan losses	70,515	63,557	62,431
Noninterest income
Gains on sales of loans	7,841	8,553	8,120
Service charges on deposit accounts	4,213	4,458	4,262
Other service charges and fees	5,072	5,228	4,991
Net gains on maturities, calls and sales of available for sale securities	10	10	52
Wealth management services income, net	1,860	1,619	1,165
Interchange income	3,882	3,476	3,562
Other	2,880	3,888	3,895
Total noninterest income	25,758	27,232	26,047
Noninterest expenses
Salaries and employee benefits	42,003	43,597	42,345
Occupancy	8,308	7,730	7,228
Other	23,421	21,496	20,987
Total noninterest expenses	73,732	72,823	70,560
Income before income taxes	22,541	17,966	17,918
Income tax expense	4,521	11,394	4,459
Net income	$ 18,020	$ 6,572	$ 13,459
Net income per share - basic (in dollars per share)	$ 5.15	$ 1.89	$ 3.90
Net income – assuming dilution (in Dollars per share)	$ 5.15	$ 1.88	$ 3.89
Weighted average number of shares - basic (in shares)	3,501,221	3,486,510	3,454,282
Weighted average number of shares - assuming dilution (in shares)	3,501,221	3,486,589	3,455,883