Fair Value Measurement - Estimated Fair Values Of The Financial Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2023	Jun. 17, 2022
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Derivative Asset Statement Of Financial Position Extensible Enumeration Not Disclosed Flag	Derivative assets
Derivative Liability Statement Of Financial Position Extensible Enumeration Not Disclosed Flag	Derivative liabilities
Financial assets:
Trading securities	$ 10,751	$ 12,549
Debt securities available-for-sale	952,173	795,464
Debt securities held-to-maturity	10,389	9,586
Financial liabilities:
Subordinated debentures, net of issuance costs	60,996	61,219	$ 62,000
Investment measured at fair value	10,100	10,300
Carrying Value
Financial assets:
Cash and cash equivalents	45,799	229,506
Trading securities	10,751	12,549
Debt securities available-for-sale	952,173	795,464
Debt securities held-to-maturity	10,760	9,866
Equity securities	361	330
FHLBNY stock, at cost	30,382	39,667
Net loans held-for-investment	4,201,076	4,166,119
Derivative assets	5,321	4,903
Financial liabilities:
Deposits	4,150,219	3,878,435
FHLB advances and other borrowings (including securities sold under agreements to repurchase)	583,859	859,272
Subordinated debentures, net of issuance costs	60,996	61,219
Advance payments by borrowers for taxes and insurance	25,995	25,102
Derivative liabilities	5,321	4,905
Estimated Fair Value
Financial assets:
Cash and cash equivalents	45,799	229,506
Trading securities	10,751	12,549
Debt securities available-for-sale	952,173	795,464
Debt securities held-to-maturity	10,389	9,586
Equity securities	361	330
FHLBNY stock, at cost	30,382	39,667
Net loans held-for-investment	4,016,849	3,887,033
Derivative assets	5,321	4,903
Financial liabilities:
Deposits	4,148,938	3,879,286
FHLB advances and other borrowings (including securities sold under agreements to repurchase)	564,588	844,766
Subordinated debentures, net of issuance costs	54,393	45,531
Advance payments by borrowers for taxes and insurance	25,995	25,102
Derivative liabilities	5,321	4,905
Estimated Fair Value | Level 1
Financial assets:
Cash and cash equivalents	45,799	229,506
Trading securities	10,751	12,549
Debt securities available-for-sale	0	44,379
Debt securities held-to-maturity	0	0
Equity securities	361	330
FHLBNY stock, at cost	0	0
Net loans held-for-investment	0	0
Derivative assets	0	0
Financial liabilities:
Deposits	0	0
FHLB advances and other borrowings (including securities sold under agreements to repurchase)	0	0
Subordinated debentures, net of issuance costs	0	0
Advance payments by borrowers for taxes and insurance	0	0
Derivative liabilities	0	0
Estimated Fair Value | Level 2
Financial assets:
Cash and cash equivalents	0	0
Trading securities	0	0
Debt securities available-for-sale	952,173	751,085
Debt securities held-to-maturity	10,389	9,586
Equity securities	0	0
FHLBNY stock, at cost	30,382	39,667
Net loans held-for-investment	0	0
Derivative assets	5,321	4,903
Financial liabilities:
Deposits	4,148,938	3,879,286
FHLB advances and other borrowings (including securities sold under agreements to repurchase)	564,588	844,766
Subordinated debentures, net of issuance costs	54,393	45,531
Advance payments by borrowers for taxes and insurance	25,995	25,102
Derivative liabilities	5,321	4,905
Estimated Fair Value | Level 3
Financial assets:
Cash and cash equivalents	0	0
Trading securities	0	0
Debt securities available-for-sale	0	0
Debt securities held-to-maturity	0	0
Equity securities	0	0
FHLBNY stock, at cost	0	0
Net loans held-for-investment	4,016,849	3,887,033
Derivative assets	0	0
Financial liabilities:
Deposits	0	0
FHLB advances and other borrowings (including securities sold under agreements to repurchase)	0	0
Subordinated debentures, net of issuance costs		0
Advance payments by borrowers for taxes and insurance	0	0
Derivative liabilities	$ 0	$ 0