REGULATORY MATTERS (Details) - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Bank [Member]
Tier 1 capital to average total assets [Abstract]
Tier 1 capital, Amount		$ 640,386	$ 591,380
For capital adequacy purposes, Amount	[1]	248,447	256,071
To be categorized as well capitalized, Amount	[1]	$ 310,559	$ 320,089
Tier 1 capital, Ratio		10.31%	9.32%
For capital adequacy purposes, Ratio	[1]	4.00%	4.00%
To be categorized as well capitalized, Ratio	[1]	5.00%	5.00%
Common equity tier 1 capital to risk-weighted assets [Abstract]
Actual, Amount		$ 640,386	$ 591,380
For capital adequacy purposes, Amount	[1]	216,103	214,984
To be categorized as well capitalized, Amount	[1]	$ 312,149	$ 310,532
Actual, Ratio		13.34%	12.38%
For capital adequacy purposes, Ratio	[1]	4.50%	4.50%
To be categorized as well capitalized, Ratio	[1]		6.50%
Tier 1 capital to risk-weighted assets [Abstract]
Actual, Amount		$ 640,386	$ 591,380
For capital adequacy purposes, Amount	[1]	288,137	286,645
To be categorized as well capitalized, Amount	[1]	$ 384,183	$ 382,194
Actual, Ratio		13.34%	12.38%
For capital adequacy purposes, Ratio	[1]	6.00%	6.00%
To be categorized as well capitalized, Ratio	[1]	8.00%	8.00%
Total capital to risk-weighted assets [Abstract]
Actual, Amount		$ 662,613	$ 612,858
For capital adequacy purposes, Amount	[1]	384,183	382,194
To be categorized as well capitalized, Amount	[1]	$ 480,229	$ 477,742
Actual, Ratio		13.80%	12.83%
For capital adequacy purposes, Ratio	[1]	8.00%	8.00%
To be categorized as well capitalized, Ratio	[1]	10.00%	10.00%
Consolidated Company [Member]
Tier 1 capital to average total assets [Abstract]
Tier 1 capital, Amount		$ 552,943	$ 546,571
For capital adequacy purposes, Amount	[1]	247,842	256,029
To be categorized as well capitalized, Amount	[1]
Tier 1 capital, Ratio		8.92%	8.61%
For capital adequacy purposes, Ratio	[1]	4.00%	4.00%
To be categorized as well capitalized, Ratio	[1]
Common equity tier 1 capital to risk-weighted assets [Abstract]
Actual, Amount		$ 552,943	$ 546,571
For capital adequacy purposes, Amount	[1]	216,361	215,424
To be categorized as well capitalized, Amount	[1]
Actual, Ratio		11.50%	11.42%
For capital adequacy purposes, Ratio	[1]	4.50%	4.50%
To be categorized as well capitalized, Ratio	[1]	6.50%
Tier 1 capital to risk-weighted assets [Abstract]
Actual, Amount		$ 552,943	$ 546,571
For capital adequacy purposes, Amount	[1]	288,481	287,232
To be categorized as well capitalized, Amount	[1]
Actual, Ratio		11.50%	11.42%
For capital adequacy purposes, Ratio	[1]	6.00%	6.00%
To be categorized as well capitalized, Ratio	[1]
Total capital to risk-weighted assets [Abstract]
Actual, Amount		$ 690,170	$ 683,049
For capital adequacy purposes, Amount	[1]	384,642	382,976
To be categorized as well capitalized, Amount	[1]
Actual, Ratio		14.35%	14.27%
For capital adequacy purposes, Ratio	[1]	8.00%	8.00%
To be categorized as well capitalized, Ratio	[1]

[1] In accordance with the Basel III rules.