XML 15 R1.htm IDEA: XBRL DOCUMENT v3.21.1
Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Mar. 12, 2021
Jun. 30, 2020
Cover [Abstract]      
Entity Central Index Key 0001730984    
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2020    
Document Transition Report false    
Entity File Number 001-38483    
Entity Registrant Name BAYCOM CORP    
Entity Incorporation, State or Country Code CA    
Entity Tax Identification Number 37-1849111    
Entity Address, Address Line One 500 Ygnacio Valley Road    
Entity Address, City or Town Walnut Creek    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94596    
City Area Code 925    
Local Phone Number 476-1800    
Title of 12(b) Security Common Stock, no par value per share    
Trading Symbol BCML    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
ICFR Auditor Attestation Flag false    
Entity Shell Company false    
Entity Public Float     $ 144.6
Entity Common Stock, Shares Outstanding   11,236,702  
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Amendment Flag false