LOANS AND ALLOWANCE FOR LOAN LOSSES (Schedule of Loans by Impairment Method) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Loans and Leases Receivable Disclosure [Line Items]
Individually evaluated for impairment, Allowance for loan losses	$ 123	$ 44
Collectively evaluated for impairment, Allowance for loan losses	20,711	18,898
Total ending allowance balance	20,834	18,942	$ 16,260	$ 14,887
Individually evaluated for impairment, Loans	1,555	1,550
Collectively evaluated for impairment, Loans	2,103,729	1,865,799
Total ending loan balance	2,105,284	1,867,349
Real estate
Loans and Leases Receivable Disclosure [Line Items]
Total ending loan balance	1,586,887	1,378,867
Real estate \| Commercial
Loans and Leases Receivable Disclosure [Line Items]
Individually evaluated for impairment, Allowance for loan losses	0	0
Collectively evaluated for impairment, Allowance for loan losses	10,885	9,037
Total ending allowance balance	10,885	9,037	7,800	7,136
Individually evaluated for impairment, Loans	379	383
Collectively evaluated for impairment, Loans	1,133,864	949,395
Total ending loan balance	1,134,243	949,778
Real estate \| Construction
Loans and Leases Receivable Disclosure [Line Items]
Individually evaluated for impairment, Allowance for loan losses	0	0
Collectively evaluated for impairment, Allowance for loan losses	647	625
Total ending allowance balance	647	625	503	519
Individually evaluated for impairment, Loans	0	0
Collectively evaluated for impairment, Loans	46,245	42,540
Total ending loan balance	46,245	42,540
Real estate \| Multifamily
Loans and Leases Receivable Disclosure [Line Items]
Individually evaluated for impairment, Allowance for loan losses	0	0
Collectively evaluated for impairment, Allowance for loan losses	2,111	2,047
Total ending allowance balance	2,111	2,047	1,210	1,156
Individually evaluated for impairment, Loans	0	0
Collectively evaluated for impairment, Loans	327,456	307,126
Total ending loan balance	327,456	307,126
Real estate \| One to four family
Loans and Leases Receivable Disclosure [Line Items]
Individually evaluated for impairment, Allowance for loan losses	70	0
Collectively evaluated for impairment, Allowance for loan losses	238	228
Total ending allowance balance	308	228	383	138
Individually evaluated for impairment, Loans	1,070	1,078
Collectively evaluated for impairment, Loans	77,873	78,345
Total ending loan balance	78,943	79,423
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Individually evaluated for impairment, Allowance for loan losses	0	0
Collectively evaluated for impairment, Allowance for loan losses	6,177	6,257
Total ending allowance balance	6,177	6,257	5,784	5,578
Individually evaluated for impairment, Loans	0	0
Collectively evaluated for impairment, Loans	421,503	381,692
Total ending loan balance	421,503	381,692
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Individually evaluated for impairment, Allowance for loan losses	53	44
Collectively evaluated for impairment, Allowance for loan losses	653	704
Total ending allowance balance	706	748	$ 580	$ 360
Individually evaluated for impairment, Loans	106	89
Collectively evaluated for impairment, Loans	96,788	106,701
Total ending loan balance	$ 96,894	$ 106,790

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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