Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest and Dividend Income:
Loans including fees	$ 118,193	$ 97,005	$ 81,209
Securities:
Taxable	9,921	8,165	9,134
Tax-exempt	2,739	2,983	3,390
Dividends	1,017	721	582
Total interest and dividend income	131,870	108,874	94,315
Interest Expense:
Deposits	17,228	9,312	8,470
Borrowed funds	5,856	4,021	2,981
Subordinated debentures (includes $164, $288, and $340 accumulated other comprehensive income reclassification for change in fair value of interest rate swap agreements in 2018, 2017, and 2016, respectively)	3,866	4,032	1,577
Total interest expense	26,950	17,365	13,028
Net Interest Income	104,920	91,509	81,287
Provision for Loan Losses	6,072	6,655	4,149
Net Interest Income After Provision for Loan Losses	98,848	84,854	77,138
Non-Interest Income:
Service charges on deposit accounts	5,759	4,809	4,297
Other service charges and fees	2,833	2,454	2,539
Wealth and asset management fees	4,172	3,724	3,087
Net realized gains on available-for-sale securities (includes $0, $1,543, and $1,005 accumulated other comprehensive income reclassifications for net realized gains on available-for-sale securities in 2018, 2017, and 2016, respectively)	0	1,543	1,005
Net realized gains on trading securities	151	93	70
Net unrealized gains (losses) on trading securities	(602)	788	433
Mortgage banking	1,019	906	1,095
Bank owned life insurance	1,408	1,659	1,082
Card processing and interchange income	4,261	3,763	3,396
Gain on sale of branch	0	536	0
Other	1,722	1,160	687
Total non-interest income	20,723	21,435	17,691
Non-Interest Expenses:
Salaries	31,323	26,205	23,472
Employee benefits (includes $84, $192, and $184 accumulated other comprehensive income reclassifications for net amortization of actuarial losses in 2018, 2017, and 2016, respectively)	10,533	9,821	8,722
Net occupancy expense	10,281	9,546	8,064
Amortization of core deposit intangible	898	1,229	1,125
Data processing	4,586	3,944	4,447
State and local taxes	3,441	2,815	2,171
Legal, professional and examination fees	1,851	1,819	1,772
Advertising	2,345	2,243	1,799
FDIC insurance	1,396	1,182	1,229
Directors fees and benefits	763	915	1,582
Prepayment penalties — long-term borrowings	0	0	1,506
Core processing conversion costs	0	0	1,693
Merger costs	0	0	486
Card processing and interchange expenses	2,834	2,116	1,889
Other	9,091	8,202	7,161
Total non-interest expenses	79,342	70,037	67,118
Income Before Income Taxes	40,229	36,252	27,711
Income Tax Expense (includes $(52), $372, and $168 income tax expense reclassification items in 2018, 2017, and 2016, respectively)	6,510	12,392	7,171
Net Income	33,719	23,860	20,540
Other Comprehensive Income (Loss):
Net change in unrealized losses on available-for-sale securities, net of reclassification and tax	(4,007)	(1,004)	(2,136)
Change in actuarial gain (loss), for post-employment health care plan, net of amortization and tax	386	825	(64)
Change in fair value of interest rate swap agreements designated as a cash flow hedge, net of interest and tax	(32)	194	180
Total other comprehensive (loss) income	(3,653)	15	(2,020)
Comprehensive Income	$ 30,066	$ 23,875	$ 18,520
Earnings Per Share:
Basic (in dollars per share)	$ 2.21	$ 1.57	$ 1.42
Diluted (in dollars per share)	$ 2.21	$ 1.57	$ 1.42