Quarterly report pursuant to sections 13 or 15(d)

NET INCOME PER COMMON SHARE ATTRIBUTABLE TO ARABIAN AMERICAN DEVELOPMENT CO (Details)

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NET INCOME PER COMMON SHARE ATTRIBUTABLE TO ARABIAN AMERICAN DEVELOPMENT CO (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Basic Net Income per Share [Abstract]        
Net Income Attributable to Arabian American Development Co. $ 3,532 $ 3,937 $ 9,514 $ 4,353
Weighted average number of shares outstanding, basic (in shares) 24,091,000 23,990,000 24,073,000 23,990,000
Net Income Attributable to Arabian American Development Company (in dollars per share) $ 0.15 $ 0.16 $ 0.40 $ 0.18
Diluted Net Income per Share [Abstract]        
Net Income Attributable to Arabian American Development Co. $ 3,532   $ 9,514  
Dilutive stock options outstanding (in shares) 662,000 552,000 686,000 622,000
Weighted average number of shares outstanding, diluted (in shares) 24,753,000 24,542,000 24,759,000 24,612,000
Net Income Attributable to Arabian American Development Company (in dollars per share) $ 0.14 $ 0.16 $ 0.38 $ 0.18
Exercisable, stock options (in shares) 1,073,180 155,667 1,073,180 155,667
Number of shares held in treasury by an outside party (in shares) 300,000 300,000 300,000 300,000