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. 12, 2013
Jun. 30, 2012
Document and Entity Information [Abstract]      
Entity Central Index Key 0000007039    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Accelerated Filer    
Entity Public Float     $ 183
Entity Common Stock, Shares Outstanding   24,105,313  
Document Fiscal Year Focus 2012    
Document Fiscal Period Focus FY    
Document Type 10-K/A    
Amendment Flag true    
Amendment Description Arabian American Development Company (the “Company”) is filing this Amendment No. 1 On Form 10-K/A (“Amendment No. 1”) in order to (1) file the financial statements of Al Masane Al Kobra Mining Co. (“AMAK”), a Saudi Arabian closed joint stock company in which the Company has an investment accounted for by the equity method, which financial statements are required to be filed under Rule 3-09 of Regulation S-X and (2) restate the Company’s consolidated financial statements for the year ended December 31, 2012 to adjust the amount recorded for its share of the earnings of AMAK as the result of changes to the December 31, 2012, financial statements of AMAK made during the preparation of AMAK’s financial statements in accordance with U.S. GAAP and their audit by a firm of independent registered public accountants registered with the Public Company Accounting Oversight Board (the “PCAOB”).    
Document Period End Date Dec. 31, 2012