LOANS AND ALLOWANCE FOR LOAN LOSSES (Schedule of Loans by Risk Category) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	$ 3,455,826	$ 3,142,319
Commercial Construction and Multifamily Real Estate Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	3,353,861	3,024,534
Commercial Construction and Multifamily Real Estate Loans [Member] | Pass
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	3,335,994	3,006,498
Commercial Construction and Multifamily Real Estate Loans [Member] | Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	4,546	3,860
Commercial Construction and Multifamily Real Estate Loans [Member] | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	9,984	9,984
Commercial Construction and Multifamily Real Estate Loans [Member] | Doubtful
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	3,337	4,192
Real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	2,816,849	2,504,388
Real estate | Commercial
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	2,186,308	1,887,505
Real estate | Commercial | Pass
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	2,175,972	1,877,160
Real estate | Commercial | Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	352	361
Real estate | Commercial | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	9,984	9,984
Real estate | Construction
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	139,992	112,290
Real estate | Construction | Pass
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	139,992	112,290
Real estate | Multi-family
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	426,716	433,239
Real estate | Multi-family | Pass
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	426,716	433,239
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	600,845	591,500
Commercial and industrial | Pass
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	593,314	583,809
Commercial and industrial | Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	4,194	3,499
Commercial and industrial | Doubtful
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	$ 3,337	$ 4,192