FAIR VALUE - NON-RECURRING LEVEL 3 MEASUREMENTS (Details) - Fair Value, Inputs, Level 3 - Nonrecurring basis - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Premises and equipment | Sale comparison approach
Fair value inputs quantitative information
Fair Value	$ 3,196	$ 2,407
Premises and equipment | Sale comparison approach | Minimum
Fair value inputs quantitative information
Adjustments determined by management for differences (as a percent)	0.00%	6.00%
Premises and equipment | Sale comparison approach | Maximum
Fair value inputs quantitative information
Adjustments determined by management for differences (as a percent)	61.00%	50.00%
Premises and equipment | Sale comparison approach | Weighted Average
Fair value inputs quantitative information
Adjustments determined by management for differences (as a percent)	18.00%	22.00%
Impaired Loans | Commercial Real Estate | Sale comparison approach
Fair value inputs quantitative information
Fair Value	$ 1,357	$ 1,214
Impaired Loans | Commercial Real Estate | Sale comparison approach | Minimum
Fair value inputs quantitative information
Adjustments determined by management for differences (as a percent)	0.00%	3.00%
Impaired Loans | Commercial Real Estate | Sale comparison approach | Maximum
Fair value inputs quantitative information
Adjustments determined by management for differences (as a percent)	23.00%	49.00%
Impaired Loans | Commercial Real Estate | Sale comparison approach | Weighted Average
Fair value inputs quantitative information
Adjustments determined by management for differences (as a percent)	8.00%	30.00%
Impaired Loans | Commercial Real Estate | Income approach
Fair value inputs quantitative information
Fair Value	$ 1,311	$ 1,429
Adjustments determined by management for differences (as a percent)	17.00%	17.00%
Impaired Loans | Commercial Real Estate | Income approach | Weighted Average
Fair value inputs quantitative information
Adjustments determined by management for differences (as a percent)	17.00%	17.00%
Impaired Loans | Residential Real Estate - Owner Occupied | Sale comparison approach
Fair value inputs quantitative information
Fair Value	$ 4,206	$ 4,787
Impaired Loans | Residential Real Estate - Owner Occupied | Sale comparison approach | Minimum
Fair value inputs quantitative information
Adjustments determined by management for differences (as a percent)	0.00%	0.00%
Impaired Loans | Residential Real Estate - Owner Occupied | Sale comparison approach | Maximum
Fair value inputs quantitative information
Adjustments determined by management for differences (as a percent)	53.00%	53.00%
Impaired Loans | Residential Real Estate - Owner Occupied | Sale comparison approach | Weighted Average
Fair value inputs quantitative information
Adjustments determined by management for differences (as a percent)	6.00%	6.00%
Impaired Loans | Residential Real Estate - Non Owner Occupied | Sale comparison approach
Fair value inputs quantitative information
Fair Value	$ 26	$ 8
Adjustments determined by management for differences (as a percent)	4.00%	0.00%
Impaired Loans | Residential Real Estate - Non Owner Occupied | Sale comparison approach | Weighted Average
Fair value inputs quantitative information
Adjustments determined by management for differences (as a percent)	4.00%	0.00%
Impaired Loans | Home equity lines of credit | Sale comparison approach
Fair value inputs quantitative information
Fair Value	$ 449	$ 426
Impaired Loans | Home equity lines of credit | Sale comparison approach | Minimum
Fair value inputs quantitative information
Adjustments determined by management for differences (as a percent)	0.00%	0.00%
Impaired Loans | Home equity lines of credit | Sale comparison approach | Maximum
Fair value inputs quantitative information
Adjustments determined by management for differences (as a percent)	71.00%	29.00%
Impaired Loans | Home equity lines of credit | Sale comparison approach | Weighted Average
Fair value inputs quantitative information
Adjustments determined by management for differences (as a percent)	24.00%	16.00%
Other Real Estate Owned | Residential Real Estate | Sale comparison approach
Fair value inputs quantitative information
Fair Value	$ 83	$ 400
Adjustments determined by management for differences (as a percent)	86.00%	17.00%
Other Real Estate Owned | Residential Real Estate | Sale comparison approach | Weighted Average
Fair value inputs quantitative information
Adjustments determined by management for differences (as a percent)	86.00%	17.00%