Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Mar. 06, 2020
Jun. 28, 2019
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2019    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Entity Registrant Name GOLDFIELD CORP    
Entity Central Index Key 0000042316    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Current Fiscal Year End Date --12-31    
Entity File Number 1-7525    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 88-0031580    
Entity Filer Category Accelerated Filer    
Entity Emerging Growth Company false    
Entity Small Business true    
Entity Shell Company false    
Title of 12(b) Security Common Stock, par value $0.10 per share    
Trading Symbol GV    
Security Exchange Name NYSEAMER    
Entity Address, Address Line One 1684 W. Hibiscus Boulevard    
Entity Address, City or Town Melbourne    
Entity Address, State or Province FL    
Entity Address, Postal Zip Code 32901    
City Area Code 321    
Local Phone Number 724-1700    
Entity Common Stock, Shares Outstanding   24,522,534  
Document Transition Report false    
Document Annual Report true    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Documents Incorporated by Reference

Portions of The Goldfield Corporation’s definitive proxy statement for its 2020 Annual Meeting of Stockholders to be filed with the Securities and Exchange Commission within 120 days after the end of the year covered by this Form 10-K Report are incorporated by reference into Part III of this report

Entity Public Float     $ 51.2