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Document and Entity Information
Apr. 18, 2024
Document and Entity Information [Abstract]  
Document Type 8-K
Document Period End Date Apr. 18, 2024
Entity Registrant Name METROPOLITAN BANK HOLDING CORP.
Entity Incorporation, State or Country Code NY
Entity File Number 001-38282
Entity Tax Identification Number 13-4042724
Entity Address, Address Line One 99 Park Avenue
Entity Address, City or Town New York
Entity Address State Or Province NY
Entity Address, Postal Zip Code 10016
City Area Code 212
Local Phone Number 659-0600
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 MCB
Security Exchange Name NYSE
Entity Emerging Growth Company false
Entity Central Index Key 0001476034
Amendment Flag false