Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Mar. 18, 2013
Jun. 30, 2012
Document and Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2012    
Document Fiscal Year Focus 2012    
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 Smaller Reporting Company    
Entity Common Stock, Shares Outstanding   25,451,354  
Entity Well-known Seasoned Issuer No    
Entity Public Float     $ 44.2
Entity Current Reporting Status Yes    
Entity Voluntary Filers No