Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Oct. 31, 2020
Document And Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2020
Entity File Number	001-34096
Entity Registrant Name	BRIDGE BANCORP, INC.
Entity Incorporation, State or Country Code	NY
Entity Tax Identification Number	11-2934195
Entity Address, Address Line One	2200 MONTAUK HIGHWAY
Entity Address, City or Town	BRIDGEHAMPTON
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	11932
City Area Code	631
Local Phone Number	537-1000
Title of 12(b) Security	Common Stock
Trading Symbol	BDGE
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		19,759,711
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Central Index Key	0000846617
Amendment Flag	false