FAIR VALUES - Quantitative Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Impaired loan valuation allowance	$ 1,566	$ 1,235
Provision for loan losses	1,571	3,981	$ 2,755
Write down of OREO	1,631	4,278	$ 1,493
Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Principal balance of impaired loans	5,200	4,900
Impaired loan valuation allowance	1,500	1,200
Provision for loan losses	288	232
OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Provision for loan losses	390
Net carrying amount of OREO		3,100
Outstanding balance of OREO	1,800
Other real estate owned valuation allowance	270	2
Write down of OREO		0
Recurring | Significant Unobservable Inputs (Level 3) | Derivative liabilities
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Liabilities, Fair Value, Recurring	48	18
Recurring | Significant Unobservable Inputs (Level 3) | Corporate bonds and notes
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Assets, Fair Value, Recurring	248
Non-recurring | Significant Unobservable Inputs (Level 3) | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Assets, Fair Value, Nonrecurring	2,916	3,645
Non-recurring | Significant Unobservable Inputs (Level 3) | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Assets, Fair Value, Nonrecurring	$ 39	$ 3,065
Minimum | Recurring | Significant Unobservable Inputs (Level 3) | Derivative liabilities
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	5.83%	6.24%
Minimum | Recurring | Significant Unobservable Inputs (Level 3) | Corporate bonds and notes
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	1.73%
Maximum | Recurring | Significant Unobservable Inputs (Level 3) | Derivative liabilities
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	5.83%	6.24%
Maximum | Recurring | Significant Unobservable Inputs (Level 3) | Corporate bonds and notes
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	1.73%
Weighted Average | Recurring | Significant Unobservable Inputs (Level 3) | Derivative liabilities
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	5.83%	6.24%
Weighted Average | Recurring | Significant Unobservable Inputs (Level 3) | Corporate bonds and notes
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	1.73%
Commercial mortgages | Non-recurring | Significant Unobservable Inputs (Level 3) | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Assets, Fair Value, Nonrecurring	$ 2,629	$ 3,593
Commercial mortgages | Non-recurring | Significant Unobservable Inputs (Level 3) | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Assets, Fair Value, Nonrecurring		$ 3,063
Commercial mortgages | Minimum | Non-recurring | Significant Unobservable Inputs (Level 3) | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	10.00%	10.00%
Commercial mortgages | Minimum | Non-recurring | Significant Unobservable Inputs (Level 3) | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate		5.00%
Commercial mortgages | Maximum | Non-recurring | Significant Unobservable Inputs (Level 3) | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	17.19%	53.92%
Commercial mortgages | Maximum | Non-recurring | Significant Unobservable Inputs (Level 3) | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate		30.32%
Commercial mortgages | Weighted Average | Non-recurring | Significant Unobservable Inputs (Level 3) | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	16.06%	11.84%
Commercial mortgages | Weighted Average | Non-recurring | Significant Unobservable Inputs (Level 3) | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate		7.73%
Home equity lines and loans | Non-recurring | Significant Unobservable Inputs (Level 3) | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Assets, Fair Value, Nonrecurring	$ 287	$ 52
Home equity lines and loans | Non-recurring | Significant Unobservable Inputs (Level 3) | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Assets, Fair Value, Nonrecurring		$ 2
Home equity lines and loans | Minimum | Non-recurring | Significant Unobservable Inputs (Level 3) | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	18.04%	12.29%
Home equity lines and loans | Minimum | Non-recurring | Significant Unobservable Inputs (Level 3) | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate		20.00%
Home equity lines and loans | Maximum | Non-recurring | Significant Unobservable Inputs (Level 3) | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	18.04%	12.29%
Home equity lines and loans | Maximum | Non-recurring | Significant Unobservable Inputs (Level 3) | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate		20.00%
Home equity lines and loans | Weighted Average | Non-recurring | Significant Unobservable Inputs (Level 3) | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	18.04%	12.29%
Home equity lines and loans | Weighted Average | Non-recurring | Significant Unobservable Inputs (Level 3) | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate		20.00%
Residential Mortgage | Non-recurring | Significant Unobservable Inputs (Level 3) | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Assets, Fair Value, Nonrecurring	$ 39
Residential Mortgage | Minimum | Non-recurring | Significant Unobservable Inputs (Level 3) | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	22.30%
Residential Mortgage | Maximum | Non-recurring | Significant Unobservable Inputs (Level 3) | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	22.30%
Residential Mortgage | Weighted Average | Non-recurring | Significant Unobservable Inputs (Level 3) | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	22.30%