Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Interest and Dividend Income:
Loans including fees	$ 97,005	$ 81,209	$ 71,814
Securities:
Taxable	8,165	9,134	10,977
Tax-exempt	2,983	3,390	3,778
Dividends	721	582	609
Total interest and dividend income	108,874	94,315	87,178
Interest Expense:
Deposits	9,312	8,470	8,498
Borrowed funds	4,021	2,981	3,222
Subordinated debentures (includes $288, $340, and $378 accumulated other comprehensive income reclassification for change in fair value of interest rate swap agreements in 2017, 2016, and 2015)	4,032	1,577	751
Total interest expense	17,365	13,028	12,471
Net Interest Income	91,509	81,287	74,707
Provision for loan losses	6,655	4,149	2,560
Net Interest Income After Provision for Loan Losses	84,854	77,138	72,147
Non-Interest Income:
Service charges on deposit accounts	4,809	4,297	4,442
Other service charges and fees	2,454	2,539	3,089
Wealth and asset management fees	3,724	3,087	2,977
Net realized gains on available-for-sale securities (includes $1,543, $1,005, and $666 accumulated other comprehensive income reclassifications for net realized gains on available-for-sale securities in 2017, 2016, and 2015)	1,543	1,005	666
Net realized gains (losses) on trading securities	93	70	(211)
Net unrealized gains (losses) on trading securities	788	433	(2)
Mortgage banking	906	1,095	746
Bank owned life insurance	1,659	1,082	1,194
Card processing and interchange income	3,763	3,396	3,417
Gain on sale of branch	536	0	0
Other	1,160	687	776
Total non-interest income	21,435	17,691	17,094
Non-Interest Expenses:
Salaries	26,205	23,472	21,652
Employee benefits (includes $192, $184, and $173 accumulated other comprehensive income reclassifications for net amortization of actuarial losses in 2017, 2016, and 2015)	9,821	8,722	7,911
Net occupancy expense	9,546	8,064	7,000
Amortization of core deposit intangible	1,229	1,125	1,008
Data processing	3,944	4,447	4,297
State and local taxes	2,815	2,171	1,868
Legal, professional and examination fees	1,819	1,772	1,553
Advertising	2,243	1,799	1,580
FDIC insurance	1,182	1,229	1,278
Directors fees and benefits	915	1,582	812
Prepayment penalties - long-term borrowings	0	1,506	0
Core processing conversion costs	0	1,693	108
Merger costs	0	486	308
Card processing and interchange expenses	2,116	1,889	2,295
Other	8,202	7,161	7,082
Total non-interest expenses	70,037	67,118	58,752
Income Before Income Taxes	36,252	27,711	30,489
Income Tax Expense (includes $372, $168, and $40 income tax expense reclassification items in 2017, 2016, and 2015)	12,392	7,171	8,292
Net Income	23,860	20,540	22,197
Other Comprehensive Income (Loss):
Net change in unrealized (losses) gains on available-for-sale securities, net of reclassification and tax	(1,004)	(2,136)	793
Change in actuarial gain (loss), for post-employment health care plan, net of amortization and tax	825	(64)	(90)
Change in fair value of interest rate swap agreements designated as a cash flow hedge, net of interest and tax	194	180	137
Total other comprehensive (loss) income	15	(2,020)	840
Comprehensive Income	$ 23,875	$ 18,520	$ 23,037
Earnings Per Share:
Basic	$ 1.57	$ 1.42	$ 1.54
Diluted	$ 1.57	$ 1.42	$ 1.54