Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v3.19.1
Document and Entity Information - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Mar. 07, 2019
Jun. 29, 2018
Document And Entity Information [Abstract] [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2018    
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Entity Registrant Name GOLDFIELD CORP    
Entity Central Index Key 0000042316    
Current Fiscal Year End Date --12-31    
Entity Filer Category Accelerated Filer    
Entity Common Stock, Shares Outstanding   24,522,534  
Entity Well-known Seasoned Issuer No    
Entity Public Float     $ 98.6
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Emerging Growth Company false    
Entity Small Business true    
Entity Shell Company false