v3.25.2
Cover
Jul. 24, 2025
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jul. 24, 2025
Entity File Number 001-15781
Entity Registrant Name BERKSHIRE HILLS BANCORP, INC.
Entity Central Index Key 0001108134
Entity Tax Identification Number 04-3510455
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 60 State Street
Entity Address, City or Town Boston
Entity Address, State or Province MA
Entity Address, Postal Zip Code 02109
City Area Code 800
Local Phone Number 773-5601
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common stock, par value $0.01 per share
Trading Symbol BHLB
Security Exchange Name NYSE
Entity Emerging Growth Company false