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, 2012
Scenario, Previously Reported [Member]
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 $ 37,894 [1] $ 37,894 [1] $ 38,105 [2] $ 30,273   $ 38,971 $ 30,884 $ 30,884                  
Total assets 120,376 [1] 120,376 [1] 117,833 [2] 91,917   121,453 110,612 92,528                  
Deferred income tax liability - long term 10,094 [1] 10,094 [1] 9,394 [2]       7,016                    
Total liabilities 38,144 [1] 38,144 [1] 46,751 [2]       44,374                    
Retained Earnings 35,351 [1] 35,351 [1] 25,030 [2] 11,145   36,428 20,187 11,756                  
Total Arabian American Development Company Stockholders'Equity 81,943 [1] 81,943 [1] 70,793 [2] 55,940   83,020 65,949 56,551                  
Total equity 82,232 [1] 82,232 [1] 71,082 [2] 56,230 [2] 52,467 [3] 83,309 66,238 56,840                  
TOTAL LIABILITIES AND EQUITY 120,376 [1] 120,376 [1] 117,833 [2] 91,917   121,453 110,612 92,528                  
Consolidated Statement of Income                                  
Equity in loss of AMAK   211 [1] 1,018 [2] 874 [2]   (866) 0 263                  
Gain from additional equity issued by AMAK   0 [1] 8,850 [2] 0 [2]     0                    
Income before income tax expense   16,225 [1] 20,389 [2] 3,778 [2]   17,302 12,557 4,388                  
Income tax expense   5,904 [1] 6,505 [2] 1,703 [2]     4,127                 6,505 1,703
Net income   10,321 [1] 13,884 [2] 2,075 [2]   11,398 8,430 2,686               13,884 2,075
Net income attributable to Arabian American Development Company 1,850 10,321 [1] 13,884 [2] 2,075 [2]   11,398 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) $ 0.08 $ 0.43 [1] $ 0.58 [2] $ 0.09 [2]   $ 0.47 $ 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) $ 0.08 $ 0.42 [1] $ 0.57 [2] $ 0.09 [2]   $ 0.46 $ 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   10,489 [1] 13,872 [2] 2,180 [2]   11,566 8,419 2,790                  
Operating activities                                  
Net income attributable to Arabian American Development Company 1,850 10,321 [1] 13,884 [2] 2,075 [2]   11,398 8,430 2,686 3,004 3,472 1,995 3,823 10,153 (95) 3    
Deferred income taxes   889 [1] 3,238 [2] 685 [2]     860                    
Equity in loss of AMAK     1,018 874     0 263                  
Gain from additional equity issued by AMAK   $ 0 [1] $ (8,850) [2] $ 0 [2]     $ 0                    
[1] Restated - see Note 3
[2] Restated - see Note 2
[3] Restated - see Notes 2 and 3