OTHER COMMITMENTS AND CONTINGENCIES (Tables)

3 Months Ended

Mar. 31, 2024

Schedule of financial instruments with off-balance sheet credit risk

	March 31,		December 31,
	2024		2023
	(in thousands)
Commitments to grant residential real estate loans-HarborOne Mortgage	$	48,624	$	35,029
Commitments to grant other loans		39,967		48,547
Unadvanced funds on home equity lines of credit		264,888		260,376
Unadvanced funds on revolving lines of credit		283,982		306,943
Unadvanced funds on construction loans		175,514		210,829

Schedule of activity in the ACL on unfunded commitments

			Second Mortgages		Residential
	One- to Four-		and Equity		Real Estate		Commercial		Commercial		Commercial
	Family		Lines of Credit		Construction		Real Estate		Construction		and Industrial		Consumer		Total
	(in thousands)
Balance at December 31, 2023	$	12,101	$	964	$	418	$	21,288	$	4,824	$	8,107	$	270	$	47,972
Charge-offs		—		—		—		—		—		(228)		(49)		(277)
Recoveries		—		3		—		100		—		46		3		152
Provision		(66)		(25)		(87)		(125)		498		138		5		338
Balance at March 31, 2024	$	12,035	$	942	$	331	$	21,263	$	5,322	$	8,063	$	229	$	48,185

			Second Mortgages		Residential
	One- to Four-		and Equity		Real Estate		Commercial		Commercial		Commercial
	Family		Lines of Credit		Construction		Real Estate		Construction		and Industrial		Consumer		Total
	(in thousands)
Balance at December 31, 2022	$	11,532	$	924	$	280	$	20,357	$	4,645	$	7,236	$	262	$	45,236
Charge-offs		—		—		—		—		—		(7)		(7)		(14)
Recoveries		1		7		—		1		—		—		16		25
Provision		(25)		36		475		584		412		255		10		1,747
Balance at March 31, 2023	$	11,508	$	967	$	755	$	20,942	$	5,057	$	7,484	$	281	$	46,994

Unfunded Commitment

Schedule of activity in the ACL on unfunded commitments

	Residential		Commercial		Commercial		Commercial
	Real Estate		Real Estate		Construction		and Industrial		Consumer		Total
	(in thousands)
Balance at December 31, 2023	$	254	$	411	$	2,351	$	882	$	20	$	3,918
Provision		4		(51)		(421)		(37)		(1)		(506)
Balance at March 31, 2024	$	258	$	360	$	1,930	$	845	$	19	$	3,412
Balance at December 31, 2022	$	336	$	628	$	3,079	$	870	$	14	$	4,927
Provision		(74)		(80)		198		70		5		119
Balance at March 31, 2023	$	262	$	548	$	3,277	$	940	$	19	$	5,046