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LOANS - Summary of Impaired Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Business Activities Loans
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	$ 36,018	$ 22,947
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	36,732	23,373
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	714	426
Business Activities Loans | Commercial real estate
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	25,390	11,411
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	25,548	11,560
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	158	149
Business Activities Loans | Commercial real estate | Construction
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance		2,000
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance		2,000
Business Activities Loans | Commercial real estate | Other
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance	18,905	4,613
With an allowance recorded	6,306	4,798
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance	18,905	4,613
With an allowance recorded	6,462	4,947
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	156	149
Business Activities Loans | Commercial real estate | Single and multi-family
Impaired Financing Receivable, Recorded Investment [Abstract]
With an allowance recorded	179
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With an allowance recorded	181
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	2
Business Activities Loans | Commercial and industrial
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	5,442	7,169
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	5,706	7,190
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	264	21
Business Activities Loans | Commercial and industrial | Other
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance	382	5,828
With an allowance recorded	5,060	1,341
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance	382	5,828
With an allowance recorded	5,324	1,362
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	264	21
Business Activities Loans | Residential
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	2,639	2,660
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	2,775	2,813
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	136	153
Business Activities Loans | Residential | 1-4 family
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance	2,101	1,181
With an allowance recorded	538	1,479
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance	2,101	1,181
With an allowance recorded	674	1,632
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	136	153
Business Activities Loans | Consumer
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	2,547	1,707
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	2,703	1,810
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	156	103
Business Activities Loans | Consumer | Other
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance		1
With an allowance recorded		101
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance		1
With an allowance recorded		108
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance		7
Business Activities Loans | Consumer | Home equity
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance	1,605	702
With an allowance recorded	942	903
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance	1,605	702
With an allowance recorded	1,098	999
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	156	96
Acquired Loans
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	5,171	5,325
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	5,605	5,465
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	434	140
Acquired Loans | Commercial real estate
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	4,006	4,324
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	4,256	4,409
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	250	85
Acquired Loans | Commercial real estate | Other
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance	547	1,722
With an allowance recorded	2,209	1,964
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance	547	1,722
With an allowance recorded	2,351	2,032
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	142	68
Acquired Loans | Commercial real estate | Single and multi-family
Impaired Financing Receivable, Recorded Investment [Abstract]
With an allowance recorded	1,250	638
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With an allowance recorded	1,358	655
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	108	17
Acquired Loans | Commercial and industrial
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	576	0
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	635	0
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	59	0
Acquired Loans | Commercial and industrial | Other
Impaired Financing Receivable, Recorded Investment [Abstract]
With an allowance recorded		576
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With an allowance recorded		635
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance		59
Acquired Loans | Residential
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	297	540
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	308	570
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	11	30
Acquired Loans | Residential | 1-4 family
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance	208	274
With an allowance recorded	89	266
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance	208	274
With an allowance recorded	100	296
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	11	30
Acquired Loans | Consumer
Impaired Financing Receivable, Recorded Investment [Abstract]
Total	292	461
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total	406	486
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	114	25
Acquired Loans | Consumer | Other
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance	0	177
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance	0	177
Acquired Loans | Consumer | Home equity
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance	0	117
With an allowance recorded	292	167
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance	0	117
With an allowance recorded	406	192
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Related Allowance	$ 114	$ 25

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