Annual report pursuant to section 13 and 15(d)

INCOME TAXES (Details)

v2.4.0.6
INCOME TAXES (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Provision for (benefit from) income taxes [Abstract]      
Current federal provision $ 4,821,000    
Current state provision 199,000    
Deferred federal provision 882,000    
Deferred state provision 2,000    
Income tax expense 5,904,000 [1] 6,505,000 [2] 1,703,000 [2]
Effective tax rate in income tax expense and the Federal statutory rate (in hundredths) 35.00% 34.00% 34.00%
Effective tax rate in income tax expense and the Federal statutory rate [Abstract]      
Income taxes at U.S. statutory rate 5,679,000    
State taxes, net of federal benefit 132,000    
Prior year overpayments 0    
Permanent and other items (250,000)    
Increase (decrease) in valuation allowance 343,000    
Income tax expense 5,904,000 [1] 6,505,000 [2] 1,703,000 [2]
Current and future Federal effective tax rate (in hundredths) 35.00%    
Deferred tax liabilities [Abstract]      
Plant, pipeline and equipment (8,260,000)    
Contractual based asset (124,000)    
Unrealized loss on swap agreements 0    
Investment in AMAK (1,712,000)    
Total deferred tax liabilities (10,096,000)    
Deferred tax assets [Abstract]      
Accounts receivable 201,000    
Inventory 95,000    
Mineral interests 376,000    
Unrealized loss on interest rate swap 313,000    
Environmental 123,000    
Post-retirement benefits 370,000    
Stock-based compensation 716,000    
Deferred revenue 332,000    
Gross deferred tax assets 2,526,000    
Valuation allowance (1,470,000)    
Total net deferred tax assets 1,056,000    
Net deferred tax liabilities (9,040,000)    
Current [Abstract]      
Deferred tax asset 1,054,000    
Non-current [Abstract]      
Deferred tax assets 2,434,000    
Deferred tax liability (11,058,000)    
Valuation allowance (1,470,000)    
Non-current deferred tax liability, net (10,094,000)    
Net deferred tax liabilities (9,040,000)    
Decrease in valuation allowance 343,000    
Income tax liability in Saudi Arabian 0 0 0
Restated - see Note 2 [Member]
     
Provision for (benefit from) income taxes [Abstract]      
Current federal provision   3,072,000 1,022,000
Current state provision   191,000 6,000
Deferred federal provision   3,237,000 663,000
Deferred state provision   5,000 12,000
Income tax expense   6,505,000 1,703,000
Effective tax rate in income tax expense and the Federal statutory rate [Abstract]      
Income taxes at U.S. statutory rate   6,933,000 1,285,000
State taxes, net of federal benefit   127,000 96,000
Prior year overpayments   0 (15,000)
Permanent and other items   (567,000) 10,000
Increase (decrease) in valuation allowance   12,000 327,000
Income tax expense   6,505,000 1,703,000
Deferred tax liabilities [Abstract]      
Plant, pipeline and equipment   (7,655,000)  
Contractual based asset   (206,000)  
Unrealized loss on swap agreements   (136,000)  
Investment in AMAK   (1,736,000)  
Total deferred tax liabilities   (9,733,000)  
Deferred tax assets [Abstract]      
Accounts receivable   187,000  
Inventory   92,000  
Mineral interests   365,000  
Unrealized loss on interest rate swap   386,000  
Environmental   119,000  
Post-retirement benefits   356,000  
Stock-based compensation   569,000  
Deferred revenue   561,000  
Gross deferred tax assets   2,635,000  
Valuation allowance   (1,127,000)  
Total net deferred tax assets   1,508,000  
Net deferred tax liabilities   (8,225,000)  
Current [Abstract]      
Deferred tax asset   1,169,000  
Non-current [Abstract]      
Deferred tax assets   1,933,000  
Deferred tax liability   (10,200,000)  
Valuation allowance   (1,127,000)  
Non-current deferred tax liability, net   (9,394,000)  
Net deferred tax liabilities   $ (8,225,000)  
[1] Restated - see Note 3
[2] Restated - see Note 2