Quarterly report pursuant to sections 13 or 15(d)

CHANGE IN ACCOUNTING PRINCIPLE FOR INVESTMENT IN AMAK (Details)

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CHANGE IN ACCOUNTING PRINCIPLE FOR INVESTMENT IN AMAK (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Consolidated Statement of Income    
Equity in gain (loss) of AMAK $ 2,964 [1] $ (213) [1]
Income before income tax expense 5,797 [1] 3,062 [1]
Net income 4,786 [1] 1,995 [1]
Net income attributable to Arabian American Development Company 4,786 [1] 1,995 [1]
Net income per common share    
Basic (in dollars per share) $ 0.20 [1] $ 0.08 [1]
Diluted (in dollars per share) $ 0.19 [1] $ 0.08 [1]
Consolidated Statement of Stockholders' Equity    
Comprehensive income 4,841 [1] 2,066 [1]
Operating activities    
Net income attributable to Arabian American Development Company 4,786 [1] 1,995 [1]
Equity in gain (loss) of AMAK 2,964 [1] (213) [1]
Scenario, Previously Reported [Member]
    
Consolidated Statement of Income    
Equity in gain (loss) of AMAK 298 0
Income before income tax expense 3,131 3,275
Net income 2,120 2,208
Net income attributable to Arabian American Development Company 2,120 2,208
Net income per common share    
Basic (in dollars per share) $ 0.09 $ 0.09
Diluted (in dollars per share) $ 0.09 $ 0.09
Consolidated Statement of Stockholders' Equity    
Comprehensive income 2,175 2,279
Operating activities    
Net income attributable to Arabian American Development Company 2,120 2,208
Equity in gain (loss) of AMAK $ 298 $ 0
[1] Restated - See Notes 2 and 3