Consolidated Statements Of Income (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013		Dec. 31, 2012
Interest and dividend income:
Interest and fees on loans	$ 37,739	$ 37,223		$ 36,579
Interest on securities	15,689	13,457		14,173
Dividend on FHLB stock	290	69		86
Total interest and dividend income	53,718	50,749		50,838
Interest expense:
Deposits	5,894	6,616		7,707
Short-term borrowings	667	487		436
Long term debt	3,344	4,560		5,724
Total interest expense	9,905	11,663		13,867
Net interest income	43,813	39,086		36,971
Provision for loan losses	1,833	1,418		1,652
Net interest income after provision for loan losses	41,980	37,668		35,319
Non-interest income:
Trust and other financial services	3,976	3,634		3,278
Service charges on deposit accounts	1,151	1,248		1,196
Debit card service charges and fees	1,584	1,572		1,462
Net securities gains	403	676		1,938
Total other-than-temporary impairment ("OTTI") losses		(359)		(1,170)
Non-credit portion of OTTI losses (before taxes)		110	[1]	317	[1]
Net OTTI losses recognized in earnings		(249)		(853)
Other operating income	644	685		688
Total non-interest income	7,758	7,566		7,709
Non-interest expense:
Salaries and employee benefits	16,836	15,227		14,027
Occupancy expense	2,143	1,968		1,682
Furniture and equipment expense	2,166	2,005		1,778
Credit and debit card expenses	429	384		367
FDIC insurance assessments	699	696		853
Other operating expense	6,938	6,580		6,911
Total non-interest expense	29,211	26,860		25,618
Income before income taxes	20,527	18,374		17,410
Income taxes	5,914	5,191		4,944
Net income	$ 14,613	$ 13,183		$ 12,466
Weighted average number of capital stock shares outstanding
Basic	5,926,387	5,898,077		5,851,677
Effect of dilutive employee stock options	49,877	30,363		27,977
Diluted	5,976,264	5,928,440		5,879,654
Per Common Share Data:
Basic earnings per share	$ 2.47	$ 2.24		$ 2.13
Diluted earnings per share	$ 2.45	$ 2.22		$ 2.12

[1] Included in other comprehensive income, net of taxes