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LOANS AND ALLOWANCE FOR CREDIT LOSSES (Schedule of Past Due Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 5,736,128	$ 5,642,012
30 - 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	5,536	632
60 - 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	2,092	18
90 days and greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	52,073	51,897
Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	59,701	52,548
Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	5,676,427	5,589,464
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	3,951,071	3,857,711
Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	150,257	153,512
Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	467,979	467,536
One-to-four-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	93,264	94,704
One-to-four-family | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	93,264	94,704
Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	4,662,571	4,573,463
Real Estate | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	3,951,071	3,857,711
Real Estate | Commercial | 30 - 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	4,915
Real Estate | Commercial | 90 days and greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	24,000	24,000
Real Estate | Commercial | Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	28,915	24,000
Real Estate | Commercial | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	3,922,156	3,833,711
Real Estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	150,257	153,512
Real Estate | Construction | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	150,257	153,512
Real Estate | Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	467,979	467,536
Real Estate | Multi-family | 90 days and greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	20,939	20,939
Real Estate | Multi-family | Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	20,939	20,939
Real Estate | Multi-family | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	447,040	446,597
Real Estate | One-to-four-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	93,264	94,704
Real Estate | One-to-four-family | 30 - 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	608	612
Real Estate | One-to-four-family | 60 - 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	2,092
Real Estate | One-to-four-family | Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	2,700	612
Real Estate | One-to-four-family | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	90,564	94,092
Commercial & industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,057,488	1,051,463
Commercial & industrial | 30 - 59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	13	20
Commercial & industrial | 60 - 89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans		18
Commercial & industrial | 90 days and greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	6,989	6,934
Commercial & industrial | Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	7,002	6,973
Commercial & industrial | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,050,486	1,044,490
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	16,069	17,086
Consumer | 90 days and greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	145	24
Consumer | Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	145	24
Consumer | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 15,924	$ 17,062

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-14

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
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-Section 55
-Paragraph 80
-Publisher FASB
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