LOANS AND ALLOWANCE FOR LOAN LOSSES (Schedule of Past Due Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 6,984	$ 3,144
Loans not Past Due	2,763,815	2,674,775
Total loans	2,770,799	2,677,919
30 - 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	481	982
60 - 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	162	14
Greater than 90 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,341	2,148
Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	2,225,500	2,157,344
Real estate | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans not Past Due	1,729,386	1,668,236
Total loans	1,729,386	1,668,236
Real estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans not Past Due	41,162	30,827
Total loans	41,162	30,827
Real estate | Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans not Past Due	379,342	375,611
Total loans	379,342	375,611
Real estate | One to four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans not Past Due	75,610	82,670
Total loans	75,610	82,670
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,547	1,801
Loans not Past Due	475,640	446,818
Total loans	482,187	448,619
Commercial and industrial | 30 - 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	379	346
Commercial and industrial | 60 - 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	162
Commercial and industrial | Greater than 90 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,006	1,455
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	437	1,343
Loans not Past Due	62,675	70,613
Total loans	63,112	71,956
Consumer | 30 - 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	102	636
Consumer | 60 - 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		14
Consumer | Greater than 90 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 335	$ 693