FAIR VALUE, Asset Quantitative Information (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Impaired Loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 16,885	$ 3,841
Impaired Loans [Member] | Multifamily Real Estate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 10,578
Impaired Loans [Member] | Multifamily Real Estate [Member] | Sales Comparison [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales	4.00%
Impaired Loans [Member] | Multifamily Real Estate [Member] | Sales Comparison [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales	4.00%
Impaired Loans [Member] | Multifamily Real Estate [Member] | Sales Comparison [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales	4.00%
Impaired Loans [Member] | Commercial Real Estate [Member] | Owner Occupied [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 569	$ 793
Impaired Loans [Member] | Commercial Real Estate [Member] | Owner Occupied [Member] | Sales Comparison [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for limited salability of specialized property		9.30%
Adjustment for estimated realizable value	23.10%
Impaired Loans [Member] | Commercial Real Estate [Member] | Owner Occupied [Member] | Sales Comparison [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for limited salability of specialized property		76.40%
Adjustment for estimated realizable value	23.10%
Impaired Loans [Member] | Commercial Real Estate [Member] | Owner Occupied [Member] | Sales Comparison [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for limited salability of specialized property		19.30%
Adjustment for estimated realizable value	23.10%
Impaired Loans [Member] | Commercial Real Estate [Member] | Non-Owner Occupied [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 1,984
Impaired Loans [Member] | Commercial Real Estate [Member] | Non-Owner Occupied [Member] | Income Approach [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences in net operating income expectations	67.40%
Impaired Loans [Member] | Commercial Real Estate [Member] | Non-Owner Occupied [Member] | Income Approach [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences in net operating income expectations	67.40%
Impaired Loans [Member] | Commercial Real Estate [Member] | Non-Owner Occupied [Member] | Income Approach [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences in net operating income expectations	67.40%
Impaired Loans [Member] | Commercial and Industrial [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 161	$ 12
Impaired Loans [Member] | Commercial and Industrial [Member] | Sales Comparison [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales		8.00%
Adjustment for estimated realizable value	8.00%
Impaired Loans [Member] | Commercial and Industrial [Member] | Sales Comparison [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales		8.00%
Adjustment for estimated realizable value	56.50%
Impaired Loans [Member] | Commercial and Industrial [Member] | Sales Comparison [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales		8.00%
Adjustment for estimated realizable value	52.80%
Impaired Loans [Member] | All Other [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 3,593	$ 3,036
Impaired Loans [Member] | All Other [Member] | Sales Comparison [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales		5.70%
Adjustment for percentage of completion of construction	8.00%
Impaired Loans [Member] | All Other [Member] | Sales Comparison [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales		9.00%
Adjustment for percentage of completion of construction	23.00%
Impaired Loans [Member] | All Other [Member] | Sales Comparison [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales		8.00%
Adjustment for percentage of completion of construction	22.70%
Other Real Estate Owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 5,253	$ 6,624
Other Real Estate Owned [Member] | Residential Real Estate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 370	$ 613
Other Real Estate Owned [Member] | Residential Real Estate [Member] | Sales Comparison [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales	0.00%	0.70%
Other Real Estate Owned [Member] | Residential Real Estate [Member] | Sales Comparison [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales	50.20%	86.80%
Other Real Estate Owned [Member] | Residential Real Estate [Member] | Sales Comparison [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales	16.40%	25.20%
Other Real Estate Owned [Member] | Commercial Real Estate [Member] | Owner Occupied [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 175	$ 175
Other Real Estate Owned [Member] | Commercial Real Estate [Member] | Owner Occupied [Member] | Sales Comparison [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales		21.80%
Adjustment for estimated realizable value	21.80%
Other Real Estate Owned [Member] | Commercial Real Estate [Member] | Owner Occupied [Member] | Sales Comparison [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales		21.80%
Adjustment for estimated realizable value	21.80%
Other Real Estate Owned [Member] | Commercial Real Estate [Member] | Owner Occupied [Member] | Sales Comparison [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales		21.80%
Adjustment for estimated realizable value	21.80%
Other Real Estate Owned [Member] | Commercial Real Estate [Member] | Non-Owner Occupied [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 1,853	$ 2,153
Other Real Estate Owned [Member] | Commercial Real Estate [Member] | Non-Owner Occupied [Member] | Sales Comparison [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales		17.20%
Adjustment for estimated realizable value	31.80%
Other Real Estate Owned [Member] | Commercial Real Estate [Member] | Non-Owner Occupied [Member] | Sales Comparison [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales		27.60%
Adjustment for estimated realizable value	58.90%
Other Real Estate Owned [Member] | Commercial Real Estate [Member] | Non-Owner Occupied [Member] | Sales Comparison [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for differences between the comparable sales		25.70%
Adjustment for estimated realizable value	34.70%
Other Real Estate Owned [Member] | All Other [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 2,855	$ 3,683
Other Real Estate Owned [Member] | All Other [Member] | Sales Comparison [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for estimated realizable value	15.10%	15.10%
Other Real Estate Owned [Member] | All Other [Member] | Sales Comparison [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for estimated realizable value	69.00%	45.40%
Other Real Estate Owned [Member] | All Other [Member] | Sales Comparison [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Adjustment for estimated realizable value	18.80%	21.80%