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LOANS AND ALLOWANCE FOR LOAN LOSSES (Schedule of Loans by Impairment Method) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Loans and Leases Receivable Disclosure [Line Items]
Individually evaluated for impairment, Allowance for loan losses	$ 4,277		$ 4,918
Collectively evaluated for impairment, Allowance for loan losses	33,844		30,489
Total ending allowance balance	38,121	$ 37,377	35,407	$ 33,614	$ 32,505	$ 26,272
Individually evaluated for impairment, Loans	16,561		17,733
Collectively evaluated for impairment, Loans	3,593,848		3,124,586
Total ending loan balance	3,610,409		3,142,319
Real estate
Loans and Leases Receivable Disclosure [Line Items]
Total ending loan balance	2,964,039		2,504,388
Real estate | Commercial
Loans and Leases Receivable Disclosure [Line Items]
Collectively evaluated for impairment, Allowance for loan losses	21,468		17,243
Total ending allowance balance	21,468	20,299	17,243	17,079	18,690	15,317
Individually evaluated for impairment, Loans	10,333		10,345
Collectively evaluated for impairment, Loans	2,367,741		1,877,160
Total ending loan balance	2,378,074		1,887,505
Real estate | Construction
Loans and Leases Receivable Disclosure [Line Items]
Collectively evaluated for impairment, Allowance for loan losses	2,101		1,593
Total ending allowance balance	2,101	1,972	1,593	1,447	741	411
Collectively evaluated for impairment, Loans	150,144		112,290
Total ending loan balance	150,144		112,290
Real estate | Multi-family
Loans and Leases Receivable Disclosure [Line Items]
Collectively evaluated for impairment, Allowance for loan losses	2,287		2,661
Total ending allowance balance	2,287	2,618	2,661	2,524	2,739	2,453
Collectively evaluated for impairment, Loans	374,555		433,239
Total ending loan balance	374,555		433,239
Real estate | One to four family
Loans and Leases Receivable Disclosure [Line Items]
Individually evaluated for impairment, Allowance for loan losses	33		53
Collectively evaluated for impairment, Allowance for loan losses	123		153
Total ending allowance balance	156	169	206	181	242	267
Individually evaluated for impairment, Loans	958		999
Collectively evaluated for impairment, Loans	60,308		70,355
Total ending loan balance	61,266		71,354
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Individually evaluated for impairment, Allowance for loan losses	2,814		3,662
Collectively evaluated for impairment, Allowance for loan losses	7,599		8,461
Total ending allowance balance	10,413	10,545	12,123	11,208		7,070
Individually evaluated for impairment, Loans	3,145		4,192
Collectively evaluated for impairment, Loans	608,158		587,308
Total ending loan balance	611,303		591,500
Consumer.
Loans and Leases Receivable Disclosure [Line Items]
Individually evaluated for impairment, Allowance for loan losses	1,430		1,203
Collectively evaluated for impairment, Allowance for loan losses	266		378
Total ending allowance balance	1,696	$ 1,774	1,581	$ 1,175	$ 961	$ 754
Individually evaluated for impairment, Loans	2,125		2,197
Collectively evaluated for impairment, Loans	32,942		44,234
Total ending loan balance	$ 35,067		$ 46,431

X

- Definition

The valuation allowance for financing receivables that are expected to be uncollectible 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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