LOANS AND ALLOWANCE FOR CREDIT LOSSES (Schedule of Loans by Allowance measurement Method) (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Loans and Leases Receivable Disclosure [Line Items]
Individually assessed, Allowance for credit losses	$ 8,008		$ 5,066
Collectively assessed, Allowance for credit losses	52,000		52,899
Total ending allowance balance	60,008	$ 58,538	57,965	$ 51,650	$ 47,752	$ 44,876
Individually assessed, Loans	121,271		68,932
Collectively assessed, Loans	5,734,261		5,573,080
Total ending loan balance	5,855,532		5,642,012
Commercial
Loans and Leases Receivable Disclosure [Line Items]
Total ending loan balance	4,056,013		3,857,711
Construction
Loans and Leases Receivable Disclosure [Line Items]
Total ending loan balance	146,596		153,512
Multi-family
Loans and Leases Receivable Disclosure [Line Items]
Total ending loan balance	440,124		467,536
One-to-four-family
Loans and Leases Receivable Disclosure [Line Items]
Total ending loan balance	92,431		94,704
Real Estate
Loans and Leases Receivable Disclosure [Line Items]
Total ending loan balance	4,735,164		4,573,463
Real Estate | Commercial
Loans and Leases Receivable Disclosure [Line Items]
Collectively assessed, Allowance for credit losses	38,484		35,635
Total ending allowance balance	38,484	36,704	35,635	34,621	31,836	29,496
Individually assessed, Loans	24,000		40,955
Collectively assessed, Loans	4,032,013		3,816,756
Total ending loan balance	4,056,013		3,857,711
Real Estate | Construction
Loans and Leases Receivable Disclosure [Line Items]
Collectively assessed, Allowance for credit losses	1,759		1,765
Total ending allowance balance	1,759	1,712	1,765	1,600	1,261	1,983
Collectively assessed, Loans	146,596		153,512
Total ending loan balance	146,596		153,512
Real Estate | Multi-family
Loans and Leases Receivable Disclosure [Line Items]
Individually assessed, Allowance for credit losses	5,002		5,002
Collectively assessed, Allowance for credit losses	2,825		3,213
Total ending allowance balance	7,827	8,171	8,215	3,543	2,871	2,823
Individually assessed, Loans	51,239		20,939
Collectively assessed, Loans	388,885		446,597
Total ending loan balance	440,124		467,536
Real Estate | One-to-four-family
Loans and Leases Receivable Disclosure [Line Items]
Collectively assessed, Allowance for credit losses	131		663
Total ending allowance balance	131	521	663	362	407	105
Collectively assessed, Loans	92,431		94,704
Total ending loan balance	92,431		94,704
Commercial & industrial
Loans and Leases Receivable Disclosure [Line Items]
Individually assessed, Allowance for credit losses	2,800
Collectively assessed, Allowance for credit losses	8,482		11,207
Total ending allowance balance	11,282	10,937	11,207	10,977	10,757	10,274
Individually assessed, Loans	45,644		6,934
Collectively assessed, Loans	1,059,650		1,044,529
Total ending loan balance	1,105,294		1,051,463
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Individually assessed, Allowance for credit losses	206		64
Collectively assessed, Allowance for credit losses	319		416
Total ending allowance balance	525	$ 493	480	$ 547	$ 620	$ 195
Individually assessed, Loans	388		104
Collectively assessed, Loans	14,686		16,982
Total ending loan balance	$ 15,074		$ 17,086