XML 16 R1.htm IDEA: XBRL DOCUMENT v3.21.1
Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2020
Apr. 23, 2021
Jun. 30, 2020
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2020    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Trading Symbol PNRG    
Entity Registrant Name PRIMEENERGY RESOURCES CORP    
Entity Central Index Key 0000056868    
Current Fiscal Year End Date --12-31    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Shell Company false    
Entity Filer Category Non-accelerated Filer    
Entity Voluntary Filers No    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Public Float     $ 40,188,536
Title of 12(b) Security Common Stock    
Security Exchange Name NASDAQ    
Entity Address, State or Province TX    
Entity Common Stock, Shares Outstanding   1,994,177  
Entity Well-known Seasoned Issuer No