Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities
Net income (loss)	$ 2,396	$ (36,342)
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization of premises and equipment	2,662	2,347
Change in right-of-use asset	2,550	2,618
(Accretion) amortization of:
Deferred loan fees, costs, and discounts, net	(655)	1,107
Premiums and discounts on securities, net	1,065	893
Change in deferred taxes, net of valuation allowance	0	8,733
Release of provision for loan losses	(1,001)	(2,518)
(Gain) loss on sales and calls of securities	(14)	1
Increase in BOLI cash surrender value	(490)	(476)
Issuance of common shares donated to Blue Foundry Charitable Foundation	0	7,500
ESOP and stock-based compensation expense	1,816	1,274
(Increase) decrease in interest and dividends receivable	(1,521)	377
Increase in other assets	(2,247)	(1,945)
Decrease in other liabilities	590	4,325
Change in lease liability	(2,372)	(2,036)
Net cash provided by (used in) operating activities	2,779	(14,142)
Cash flows from investing activities
Net (originations) repayments of loans receivable	(152,847)	86,975
Purchases of residential mortgage loans	(104,040)	(91,635)
Proceeds from sale of Real Estate Owned	0	618
Purchases of securities available for sale	(80,039)	(164,958)
Purchases of securities held to maturity	(10,600)	(23,362)
Proceeds from calls of securities held to maturity	0	7,000
Proceeds from sales and calls of securities available for sale	4,659	14,216
Principal payments and maturities on securities available for sale	47,875	65,002
Purchases of other investments	150	0
Purchase of Federal Home Loan Bank stock	(30,863)	0
Redemption of Federal Home Loan Bank stock	25,133	6,678
Proceeds from Assets held for sale	0	6,034
Purchases of premises and equipment	(5,364)	(11,902)
Net cash used in investing activities	(306,236)	(105,334)
Cash flows from financing activities
Net change in deposits	41,822	(109,144)
Proceeds from advances from Federal Home Loan Bank	1,423,000	583,600
Repayments of advances from Federal Home Loan Bank	(1,298,000)	(727,500)
Net increase in advances by borrowers for taxes and insurance	(280)	(1,259)
Purchase of treasury stock	(15,349)	0
Net proceeds from issuance of common shares	0	250,780
Net cash provided by (used in) financing activities	151,193	(3,523)
Net decrease in cash and cash equivalents	(152,264)	(122,999)
Cash and cash equivalents at beginning of period	193,446	316,445
Cash and cash equivalents at end of period	41,182	193,446
Cash paid during the period for:
Interest	10,714	12,836
Income taxes	190	150
Supplemental noncash disclosures
Transfers of assets to held for sale	917	892
Lease liabilities arising from obtaining right-of-use assets	2,999	3,197
Purchase of common shares by the ESOP	$ 0	$ 22,818