XML 129 R1.htm IDEA: XBRL DOCUMENT v3.25.4
Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Feb. 13, 2026
Jun. 30, 2025
Document And Entity Information      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Document Transition Report false    
Securities Act File Number 001-38282    
Entity Registrant Name METROPOLITAN BANK HOLDING CORP.    
Entity Incorporation, State or Country Code NY    
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    
Title of 12(b) Security Common Stock, $0.01 par value    
Trading Symbol MCB    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 695.4
Entity Common Stock, Shares Outstanding   10,116,117  
Documents Incorporated by Reference [Text Block]

Portions of the Registrant’s definitive proxy statement relating to its 2026 Annual Meeting of Stockholders are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated.

    
Entity Central Index Key 0001476034    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Amendment Flag false    
Auditor Name Crowe LLP    
Auditor Firm ID 173    
Auditor Location New York, New York