Consolidated Statements of Income - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest income
Interest and fees on loans	$ 38,187,000	$ 34,939,000	$ 29,740,000
Interest and dividends on investment securities (AFS & Equity):
Taxable	6,568,000	6,280,000	6,270,000
Tax-exempt	1,529,000	1,845,000	1,957,000
Interest on trading securities			45,000
Interest on interest-bearing balances and other interest income	134,000	136,000	90,000
Total interest income	46,418,000	43,200,000	38,102,000
Interest on deposits
Interest-bearing demand	3,013,000	2,226,000	1,137,000
Money market	815,000	329,000	249,000
Savings	1,605,000	1,657,000	1,156,000
Time	1,908,000	1,578,000	1,512,000
Time of $100 or more	2,083,000	1,723,000	1,373,000
Interest on short-term borrowings	700,000	672,000	253,000
Total interest expense	10,124,000	8,185,000	5,680,000
Net interest income	36,294,000	35,015,000	32,422,000
Provision for loan losses	1,300,000	1,130,000	1,400,000
Net interest income after provision for loan losses	34,994,000	33,885,000	31,022,000
Non-interest income
Total other-than-temporary impairment loss on investment securities			(80,000)
Net other-than temporary impairment losses on investment securities			(80,000)
Net unrealized gain (loss) on investment equity securities	770,000	(336,000)
Net gain (loss) on sale of investment securities	1,755,000	(76,000)	1,580,000
Net gain (loss) on investment securities	2,525,000	(412,000)	1,500,000
Net gain on trading activities			27,000
Fees for services to customers	1,691,000	1,699,000	1,668,000
ATM and debit card	2,070,000	1,895,000	1,749,000
Retail brokerage and advisory	560,000	370,000	436,000
Bank-owned life insurance	292,000	291,000	345,000
Merchant	348,000	326,000	345,000
Net gain on sale of loans	195,000	105,000	375,000
Other	636,000	618,000	442,000
Total non-interest income	8,317,000	4,892,000	6,887,000
Non-interest expense
Salaries and employee benefits	16,086,000	14,411,000	13,121,000
Net occupancy	2,040,000	1,872,000	1,789,000
Furniture and equipment	2,496,000	2,165,000	1,859,000
Marketing	1,042,000	927,000	914,000
Third party services	1,853,000	1,889,000	1,608,000
Telephone, postage and supplies	720,000	685,000	804,000
State taxes	760,000	727,000	687,000
FDIC insurance premiums	269,000	624,000	577,000
Other	2,838,000	2,585,000	2,361,000
Total non-interest expense	28,104,000	25,885,000	23,720,000
Income before income taxes	15,207,000	12,892,000	14,189,000
Provision for income taxes	2,850,000	1,557,000	5,900,000
Net income	$ 12,357,000	$ 11,335,000	$ 8,289,000
Earnings per share - basic	$ 3.53	$ 3.27	$ 2.42
Earnings per share - diluted	3.53	3.25	2.41
Cash dividends per share	$ 1.32	$ 1.28	$ 1.24