LOAN CREDIT QUALITY AND RELATED ALLOWANCE FOR LOAN LOSSES - Additional Information (Details)	12 Months Ended
	Dec. 31, 2015 USD ($) category class loan contract component	Dec. 31, 2014 USD ($) loan contract	Dec. 31, 2013 USD ($)	Jun. 01, 2013 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid principal balance	$ 16,063,000	$ 17,842,000		$ 1,211,000
Estimated fair value				878,000
Contractual cash flows				1,783,000
Expected cash flows				941,000
Non-accretable discount				842,000
Accretable discount		$ 0	$ 35,000	63,000
Minimum amount to evaluate individual loans for possible impairment	100,000
Maximum amount to evaluate individual loans for possible impairment on a case by case basis	$ 100,000
Payment delays period up to which loans are not classified as impaired, maximum (in days)	90 days
Amount committed to be advanced in connection with impaired loans	$ 20,000
Period to classify TDR non performing loans to performing (in months)	6 months
Number of TDRs granted | loan	22	9
Number of loans granted payment concessions | loan	7	3
Loans granted payment concessions, amount	$ 1,008,000	$ 288,000
Number of loans granted term concessions | loan	4	5
Loans granted term concessions, amount	$ 183,000	$ 1,142,000
Number of loans granted rate concessions | loan	2	1
Loans granted rate concessions, amount	$ 287,000	$ 218,000
Number of loans granted concessions due to other default | loan	9
Loans granted concessions due to other default, amount	$ 1,108,000
Number of loan modifications, subsequently defaulted | contract	8
Number of categories considered not criticized and rated as Pass | category	6
Minimum period after which loans are considered as substandard (in days)	90 days
Minimum amount after which external annual loan review is performed		800,000
The total number of components that represents the allowance for loan losses | component	2
The number of classes that groups of loans are collectively evaluated for impairment | class	2
Period considered for quarter moving average which used in calculating historical charge off (in months)	36 months
Adjustment of period considered for quarter moving average which used in calculating historical charge off (in months)	12 months
Luzerne National Bank Corporation
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum amount after which external annual loan review is performed	$ 1,450,000
Jersey Shore State Bank
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum amount after which external annual loan review is performed	1,100,000
Receivables Acquired with Deteriorated Credit Quality
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired with deteriorated credit quality	$ 341,000	349,000
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of categories in which real estate loans are segmented | category	3
Purchased Loans | Luzerne National Bank Corporation
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid principal balance				1,211,000
Estimated fair value				878,000
Contractual cash flows				1,783,000
Expected cash flows				941,000
Non-accretable discount				842,000
Accretable discount				$ 63,000
Commercial Real Estate Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid principal balance	$ 12,537,000	$ 14,117,000
Number of loan modifications, subsequently defaulted | contract	1	1
Commercial Real Estate Mortgage | Receivables Acquired with Deteriorated Credit Quality
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired with deteriorated credit quality	$ 0	$ 0