CONSOLIDATED STATEMENT OF INCOME (UNAUDITED) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
INTEREST INCOME:
Interest and fees on loans	$ 12,666,000	$ 10,659,000	$ 36,988,000	$ 30,680,000
Interest-bearing deposits with banks	94,000	49,000	218,000	129,000
Investment securities:
Taxable	967,000	762,000	2,683,000	2,341,000
Nontaxable	425,000	588,000	1,426,000	1,857,000
Dividends	107,000	62,000	355,000	191,000
TOTAL INTEREST INCOME	14,259,000	12,120,000	41,670,000	35,198,000
INTEREST EXPENSE:
Deposits	1,794,000	1,210,000	4,695,000	3,398,000
Borrowed funds	695,000	293,000	2,034,000	782,000
TOTAL INTEREST EXPENSE	2,489,000	1,503,000	6,729,000	4,180,000
NET INTEREST INCOME	11,770,000	10,617,000	34,941,000	31,018,000
Provision for loan losses	475,000	500,000	1,300,000	1,740,000
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	11,295,000	10,117,000	33,641,000	29,278,000
NON-INTEREST INCOME:
Revenue from customers	1,634,000		4,819,000
Gains on loans sold	170,000	134,000	302,000	383,000
Equity security gains (losses), net	(4,000)	0	9,000	0
Available for sale security gains (losses), net	(8,000)	9,000	(8,000)	204,000
Earnings on bank owned life insurance	161,000	166,000	467,000	499,000
Other	141,000	126,000	414,000	380,000
TOTAL NON-INTEREST INCOME	2,010,000	1,921,000	5,758,000	5,844,000
NON-INTEREST EXPENSES:
Salaries and employee benefits	4,679,000	4,287,000	14,251,000	13,030,000
Occupancy	500,000	475,000	1,606,000	1,479,000
Furniture and equipment	130,000	159,000	394,000	444,000
Professional fees	507,000	318,000	1,273,000	942,000
FDIC insurance	120,000	95,000	327,000	295,000
Pennsylvania shares tax	250,000	243,000	850,000	767,000
Amortization of intangibles	74,000	74,000	224,000	223,000
OREO expenses	6,000	139,000	92,000	255,000
Other	1,522,000	1,457,000	4,305,000	4,169,000
TOTAL NON-INTEREST EXPENSES	7,788,000	7,247,000	23,322,000	21,604,000
Income before provision for income taxes	5,517,000	4,791,000	16,077,000	13,518,000
Provision for income taxes	936,000	1,141,000	2,558,000	3,097,000
NET INCOME	$ 4,581,000	$ 3,650,000	$ 13,519,000	$ 10,421,000
PER COMMON SHARE DATA:
Net Income - Basic (in dollars per share)	$ 1.31	$ 1.04	$ 3.85	$ 2.96
Net Income - Diluted (in dollars per share)	1.31	1.04	3.85	2.96
Cash Dividends Paid (in dollars per share)	$ 0.440	$ 0.426	$ 1.302	$ 1.228
Number of shares used in computation - basic (in shares)	3,502,859	3,517,208	3,507,515	3,515,032
Number of shares used in computation - diluted (in shares)	3,503,020	3,519,493	3,509,676	3,516,906
Service Charges [Member]
NON-INTEREST INCOME:
Revenue from customers	$ 1,181,000	$ 1,145,000	$ 3,455,000	$ 3,323,000
Trust [Member]
NON-INTEREST INCOME:
Revenue from customers	147,000	187,000	548,000	596,000
Brokerage and Insurance [Member]
NON-INTEREST INCOME:
Revenue from customers	$ 222,000	$ 154,000	$ 571,000	$ 459,000