Annual report pursuant to section 13 and 15(d)

INVESTMENT IN AL MASANE AL KOBRA MINING COMPANY (AMAK) (Details)

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INVESTMENT IN AL MASANE AL KOBRA MINING COMPANY (AMAK) (Details)
 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended
Dec. 31, 2013
USD ($)
Dec. 31, 2013
SAR
Dec. 31, 2012
USD ($)
Dec. 31, 2011
USD ($)
May 31, 2013
AMAK [Member]
USD ($)
Jul. 31, 2011
AMAK [Member]
Member
Dec. 31, 2013
AMAK [Member]
USD ($)
Dec. 31, 2013
AMAK [Member]
SAR
Dec. 31, 2012
AMAK [Member]
USD ($)
Dec. 31, 2011
AMAK [Member]
USD ($)
Jul. 31, 2011
AMAK [Member]
Saudi Investors [Member]
Jul. 31, 2011
AMAK [Member]
ARMICO [Member]
USD ($)
Investment in Al Masane Al Kobra Mining Company Amak [Line Items]                        
Investment in AMAK             $ 54,100,000   $ 37,900,000      
Cash contributed by other investors to AMAK                       37,300,000
Exchange rate   3.75           3.75        
Percentage interest acquire by other investors in AMAK (in hundredths)                 10.00%   53.00% 10.00%
Shares purchased under equity method investments (in shares)             937,500 937,500        
Share price (in dollars per share)             $ 8.00 30        
Payments to acquire equity method investments             7,500,000          
Number of board members can be appointed by entity           4            
Maximum number of board members as per by laws           9            
Gain upon formation of AMAK             16,200,000          
Percentage investment in AMAK (in hundredths)           37.00% 35.00% 35.00%        
Number of shares acquired in joint venture by other investors (in shares)                       5,000,000
Impairment charges on investment in AMAK             0   0 0    
Results of Operations [Abstract]                        
Sales             104,990,000   15,594,000 0    
Gross Profit             21,881,000   3,825,000 0    
General, administrative and other expenses             12,360,000   6,328,000 2,621,000    
Net Income (loss) 3,356,000   (885,000) (1,018,000)     9,521,000   (2,503,000) (2,621,000)    
Financial Position [Abstract]                        
Current assets             32,923,000   32,827,000      
Noncurrent assets             264,997,000   261,620,000      
Total assets             297,920,000   294,447,000      
Current liabilities             22,497,000   135,111,000      
Long term liabilities             75,826,000   9,260,000      
Shareholders' equity             199,597,000   150,076,000      
Total liabilities and Shareholders' equity             297,920,000   294,447,000      
Equity in Income or Loss of AMAK Reflected on Consolidated Statement Of Operation [Abstract]                        
Company's share of earnings (losses) reported by AMAK 3,356,000   (885,000) (1,018,000)     9,521,000   (2,503,000) (2,621,000)    
Amortization of difference between Company's investment in AMAK and Company's share of net assets of AMAK 1,347,000   674,000 0                
Equity in earnings (losses) of AMAK 4,703,000   (211,000) (1,018,000)                
Increase in the entity's share in net assets of AMAK             4,000,000     8,900,000    
Advances to AMAK 536,000   2,162,000       536,000   2,162,000      
Proceeds from advances to AMAK         2,016,000              
Additional advances to AMAK                 $ 2,041,000