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LOANS (Schedule of Loan Receivables) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Loans and Leases Receivable Disclosure [Line Items]
Total loans	$ 1,601,657		$ 1,420,966
Deferred fees	(2,010)		(1,070)
Loans, net of deferred fees and unamortized costs	1,599,647		1,419,896
Allowance for loan losses	(17,463)	$ (16,260)	(14,887)	$ (13,909)	$ (12,236)	$ (11,815)
Net loans	1,582,184		1,405,009
Real estate
Loans and Leases Receivable Disclosure [Line Items]
Total loans	1,160,448		1,036,370
Real estate \| Commercial
Loans and Leases Receivable Disclosure [Line Items]
Total loans	857,071		783,745
Allowance for loan losses	(8,139)	(7,800)	(7,136)	(6,458)	(5,853)	(5,206)
Real estate \| Construction
Loans and Leases Receivable Disclosure [Line Items]
Total loans	45,974		36,960
Allowance for loan losses	(666)	(503)	(519)	(557)	(502)	(409)
Real estate \| Multifamily
Loans and Leases Receivable Disclosure [Line Items]
Total loans	233,474		190,097
Allowance for loan losses	(1,557)	(1,210)	(1,156)	(942)	(687)	(620)
Real estate \| One to four family
Loans and Leases Receivable Disclosure [Line Items]
Total loans	23,929		25,568
Allowance for loan losses	(380)	(383)	(138)	(102)	(105)	(109)
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Total loans	354,932		340,001
Allowance for loan losses	(6,053)	(5,784)	(5,578)	(5,588)	(4,963)	(5,364)
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total loans	86,277		44,595
Allowance for loan losses	$ (668)	$ (580)	$ (360)	$ (262)	$ (126)	$ (107)