v3.26.1
Document And Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2025
Mar. 13, 2026
Jun. 30, 2025
Document Information [Line Items]      
Entity Central Index Key 0001168455    
Entity Registrant Name Plumas Bancorp    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2025    
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Document Transition Report false    
Entity File Number 000-49883    
Entity Incorporation, State or Country Code CA    
Entity Tax Identification Number 75-2987096    
Entity Address, Address Line One 5525 Kietzke Lane, Suite 100    
Entity Address, City or Town Reno    
Entity Address, State or Province NV    
Entity Address, Postal Zip Code 89511    
City Area Code 775    
Local Phone Number 786-0907    
Title of 12(b) Security Common Stock, no par value    
Trading Symbol PLBC    
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 false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 246,700,000
Entity Common Stock, Shares Outstanding   6,978,988  
Auditor Name Elliott Davis, LLC    
Auditor Location Franklin, Tennessee    
Auditor Firm ID 149