v3.25.3
Cover
Nov. 01, 2025
Cover [Abstract]  
Document Type 8-K/A
Amendment Flag false
Document Period End Date Nov. 01, 2025
Current Fiscal Year End Date --12-31
Entity File Number 001-38955
Entity Registrant Name HarborOne Bancorp, Inc.
Entity Central Index Key 0001769617
Entity Tax Identification Number 81-1607465
Entity Incorporation, State or Country Code MA
Entity Address, Address Line One 770 Oak Street
Entity Address, City or Town Brockton
Entity Address, State or Province MA
Entity Address, Postal Zip Code 02301
City Area Code 508
Local Phone Number 895-1000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $0.01 par value
Trading Symbol HONE
Security Exchange Name NASDAQ
Entity Emerging Growth Company false