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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
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-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
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LOANS HELD FOR INVESTMENT, NET - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans, net of fair value hedge basis point adjustments	$ 10,764,583	$ 10,773,428
Allowance for credit losses	76,068	71,743
Real Estate Collateral Dependent
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans, net of fair value hedge basis point adjustments	17,876	11,004
Allowance for credit losses	1,497	926
Business loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	35,981	35,962	$ 43,879	$ 47,029
Business loans \| Real Estate Collateral Dependent
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans, net of fair value hedge basis point adjustments	4,966	3,742
Allowance for credit losses	1,210
One-to-four family residential and cooperative/condominium apartment
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	6,973	6,813	6,012	5,969
Multifamily residential and residential mixed-use
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	11,171	7,237	7,613	8,360
Non-owner-occupied commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	19,445	19,623	18,076	20,153
Non-owner-occupied commercial real estate \| Real Estate Collateral Dependent
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans, net of fair value hedge basis point adjustments		6,605
Allowance for credit losses		621
Acquisition, development, and construction ("ADC")
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	2,322	1,989	2,515	1,723
Acquisition, development, and construction ("ADC") \| Real Estate Collateral Dependent
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans, net of fair value hedge basis point adjustments	12,910	657
Allowance for credit losses	287	305
Other Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	$ 176	$ 119	$ 240	$ 273