Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Interest income
Loans		$ 27,048	$ 24,060
Federal funds sold and interest bearing deposits		268	134
Mortgage loans held for sale		35	44
Securities
Taxable		2,138	2,114
Tax-exempt		241	281
Total interest income		29,730	26,633
Interest expense
Deposits		2,077	1,163
Short term borrowing		123	54
Long term debt		235	232
Total interest expense		2,435	1,449
Net interest income		27,295	25,184
Provision for loan losses		735	900
Net interest income after provision for loan losses		26,560	24,284
Non-interest income
Total non-interest income		10,923	10,644
Non-interest expenses
Compensation		10,970	10,669
Employee benefits		2,633	2,742
Net occupancy and equipment		1,818	1,907
Technology and communication		2,196	1,848
Marketing and business development		646	445
Postage, printing and supplies		391	371
Legal and professional		493	429
FDIC insurance		242	230
Amortization/impairment of investments in tax credit partnerships			616
Capital and deposit based taxes		852	764
Other		786	974
Total non-interest expenses		21,027	20,995
Income before income taxes		16,456	13,933
Income tax expense		3,052	3,142
Net income		$ 13,404	$ 10,791
Net income per share, basic (in dollars per share)		$ 0.59	$ 0.48
Net income per share, diluted (in dollars per share)		$ 0.58	$ 0.47
Average common shares:
Average shares outstanding (in shares)		22,577	22,492
Diluted (in shares)		22,942	23,002
Fiduciary and Trust [Member]
Non-interest income
Non-interest income		$ 5,500	$ 5,094
Deposit Account [Member]
Non-interest income
Non-interest income		1,511	1,565
Credit and Debit Card [Member]
Non-interest income
Non-interest income		1,508	1,406
Treasury Management [Member]
Non-interest income
Non-interest income		947	956
Mortgage Banking [Member]
Non-interest income
Non-interest income	[1]	576	702
Investment Advisory, Management and Administrative Service [Member]
Non-interest income
Non-interest income		404	386
Life Insurance Product Line [Member]
Non-interest income
Non-interest income	[1]	187	204
Product and Service, Other [Member]
Non-interest income
Non-interest income	[2]	$ 290	$ 331

[1] Not within the scope of ASC 606

[2] includes safety box deposit fees of $45 thousand included within the scope of ASC 606