CONSOLIDATED STATEMENT OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
INTEREST AND DIVIDEND INCOME:
Loans, including fees	$ 39,134	$ 36,495	$ 32,353
Investment securities:
Taxable	3,426	5,111	6,034
Tax-exempt	2,795	3,453	4,602
Dividend and other interest income	769	547	310
TOTAL INTEREST AND DIVIDEND INCOME	46,124	45,606	43,299
INTEREST EXPENSE:
Deposits	3,129	2,995	3,221
Short-term borrowings	116	54	81
Long-term borrowings	1,974	1,913	1,962
TOTAL INTEREST EXPENSE	5,219	4,962	5,264
NET INTEREST INCOME	40,905	40,644	38,035
PROVISION FOR LOAN LOSSES	2,300	2,850	2,275
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	38,605	37,794	35,760
NON-INTEREST INCOME:
Service charges	2,383	2,419	2,307
Securities gains, available for sale	2,592	3,515	2,417
Securities losses, trading	(22)	0	0
Bank-owned life insurance	720	923	677
Gain on sale of loans	1,743	1,803	1,438
Insurance commissions	781	1,146	1,084
Brokerage commissions	1,064	1,077	1,018
Other	3,504	3,625	3,101
TOTAL NON-INTEREST INCOME	12,765	14,508	12,042
NON-INTEREST EXPENSE:
Salaries and employee benefits	17,023	17,273	15,415
Occupancy	2,248	2,301	1,905
Furniture and equipment	2,622	2,536	1,815
Pennsylvania shares tax	954	907	864
Amortization of investment in limited partnerships	661	661	661
Federal Deposit Insurance Corporation deposit insurance	867	746	594
Marketing	612	532	517
Intangible amortization	311	345	213
Other	8,438	8,589	8,283
TOTAL NON-INTEREST EXPENSE	33,736	33,890	30,267
INCOME BEFORE INCOME TAX PROVISION	17,634	18,412	17,535
INCOME TAX PROVISION	3,736	3,804	3,451
NET INCOME	$ 13,898	$ 14,608	$ 14,084
EARNINGS PER SHARE - BASIC AND DILUTED (in dollars per share)	$ 2.91	$ 3.03	$ 3.19
WEIGHTED AVERAGE SHARES OUTSTANDING - BASIC AND DILUTED (in shares)	4,772,239	4,816,149	4,410,626
DIVIDENDS PER SHARE (in dollars per share)	$ 1.88	$ 1.88	$ 2.13