CONSOLIDATED STATEMENT OF INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
INTEREST INCOME:
Interest and fees on loans	$ 12,461	$ 10,304	$ 24,322	$ 20,021
Interest-bearing deposits with banks	66	45	124	80
Investment securities:
Taxable	916	775	1,716	1,579
Nontaxable	474	601	1,001	1,269
Dividends	111	53	248	129
TOTAL INTEREST INCOME	14,028	11,778	27,411	23,078
INTEREST EXPENSE:
Deposits	1,585	1,143	2,901	2,188
Borrowed funds	692	231	1,339	489
TOTAL INTEREST EXPENSE	2,277	1,374	4,240	2,677
NET INTEREST INCOME	11,751	10,404	23,171	20,401
Provision for loan losses	325	625	825	1,240
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	11,426	9,779	22,346	19,161
Non Interest Income [Abstract]
Revenue from customers	1,566		3,187
Gains on loans sold	60	148	132	249
Equity security gains, net	7	0	13	0
Available for sale security gains, net	0	23	0	195
Earnings on bank owned life insurance	154	167	306	333
Other	133	128	273	254
TOTAL NON-INTEREST INCOME	1,842	1,888	3,748	3,923
NON-INTEREST EXPENSES:
Salaries and employee benefits	4,737	4,377	9,572	8,743
Occupancy	514	477	1,106	1,004
Furniture and equipment	122	146	264	285
Professional fees	262	258	557	568
FDIC insurance	107	95	207	200
Pennsylvania shares tax	300	243	600	524
Amortization of intangibles	74	73	150	149
Other real estate owned expenses	157	82	295	172
Other	1,429	1,415	2,783	2,712
TOTAL NON-INTEREST EXPENSES	7,702	7,166	15,534	14,357
Income before provision for income taxes	5,566	4,501	10,560	8,727
Provision for income taxes	875	1,033	1,622	1,956
NET INCOME	$ 4,691	$ 3,468	$ 8,938	$ 6,771
PER COMMON SHARE DATA:
Net Income - Basic (in dollars per share)	$ 1.34	$ 0.99	$ 2.55	$ 1.93
Net Income - Diluted (in dollars per share)	1.34	0.99	2.55	1.93
Cash Dividends Paid (in dollars per share)	$ 0.435	$ 0.401	$ 0.870	$ 0.802
Number of shares used in computation - basic (in shares)	3,507,242	3,514,394	3,509,882	3,513,925
Number of shares used in computation - diluted (in shares)	3,508,709	3,515,582	3,510,513	3,514,535
Service Charges [Member]
Non Interest Income [Abstract]
Revenue from customers	$ 1,170	$ 1,120	$ 2,274	$ 2,178
Trust [Member]
Non Interest Income [Abstract]
Revenue from customers	150	188	401	409
Brokerage and Insurance [Member]
Non Interest Income [Abstract]
Revenue from customers	$ 168	$ 114	$ 349	$ 305