Annual report pursuant to section 13 and 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 12 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2011
Scenario, Previously Reported [Member]
Dec. 31, 2010
Scenario, Previously Reported [Member]
Sep. 30, 2012
Restatement Adjustment [Member]
Jun. 30, 2012
Restatement Adjustment [Member]
Mar. 31, 2012
Restatement Adjustment [Member]
Dec. 31, 2011
Restatement Adjustment [Member]
Sep. 30, 2011
Restatement Adjustment [Member]
Jun. 30, 2011
Restatement Adjustment [Member]
Mar. 31, 2011
Restatement Adjustment [Member]
Dec. 31, 2011
Restatement Adjustment [Member]
Dec. 31, 2010
Restatement Adjustment [Member]
Consolidated Balance Sheet                                
Investment in AMAK $ 38,971 $ 38,971 $ 38,105 [1] $ 30,273   $ 30,884 $ 30,884                  
Total assets 121,453 121,453 117,833 [1] 91,917   110,612 92,528                  
Deferred income tax liability - long term 10,094 10,094 9,394 [1]     7,016                    
Total liabilities 38,144 38,144 46,751 [1]     44,374                    
Retained Earnings 36,428 36,428 25,030 [1] 11,145   20,187 11,756                  
Total Arabian American Development Company Stockholders'Equity 83,020 83,020 70,793 [1] 55,940   65,949 56,551                  
Total equity 83,309 83,309 71,082 [1] 56,230 [1] 52,467 [1] 66,238 56,840                  
TOTAL LIABILITIES AND EQUITY 121,453 121,453 117,833 [1] 91,917   110,612 92,528                  
Consolidated Statement of Income                                
Equity in loss of AMAK   (866) 1,018 [1] 874 [1]   0 263                  
Gain from additional equity issued by AMAK   0 8,850 [1] 0 [1]   0                    
Income before income tax expense   17,302 20,389 [1] 3,778 [1]   12,557 4,388                  
Income tax expense   5,904 6,505 [1] 1,703 [1]   4,127                 6,505 1,703
Net income   11,398 13,884 [1] 2,075 [1]   8,430 2,686               13,884 2,075
Net income attributable to Arabian American Development Company 2,927 11,398 13,884 [1] 2,075 [1]   8,430 2,686 3,004 3,472 1,995 3,823 10,153 (95) 3    
Net income per common share                                
Basic earnings per share (in dollars per share) $ 0.12 $ 0.47 $ 0.58 [1] $ 0.09 [1]   $ 0.35 $ 0.11 $ 0.13 $ 0.14 $ 0.08 $ 0.16 $ 0.42 $ 0.00 $ 0.00 $ 0.58 $ 0.09
Diluted earnings per share (in dollars per share) $ 0.12 $ 0.46 $ 0.57 [1] $ 0.09 [1]   $ 0.35 $ 0.11 $ 0.12 $ 0.14 $ 0.08 $ 0.15 $ 0.42 $ 0.00 $ 0.00 $ 0.57 $ 0.09
Consolidated Statement of Stockholders' Equity                                
Comprehensive income   11,566 13,872 [1] 2,180 [1]   8,419 2,790                  
Operating activities                                
Net income attributable to Arabian American Development Company 2,927 11,398 13,884 [1] 2,075 [1]   8,430 2,686 3,004 3,472 1,995 3,823 10,153 (95) 3    
Deferred income taxes   889 3,238 [1] 685 [1]   860                    
Equity in loss of AMAK   (866) 1,018 [1] 874 [1]   0 263                  
Gain from additional equity issued by AMAK   $ 0 $ (8,850) [1] $ 0 [1]   $ 0                    
[1] Restated - See Note 2