Annual report pursuant to Section 13 and 15(d)

AMAK ACCOUNTS PAYABLE, ACCRUED LIABILITIES AND FORGIVENESS OF LIABILITIES (Details)

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AMAK ACCOUNTS PAYABLE, ACCRUED LIABILITIES AND FORGIVENESS OF LIABILITIES (Details)
$ in Thousands
Mar. 31, 2016
SAR (ر.س)
Dec. 31, 2018
USD ($)
Dec. 31, 2018
SAR (ر.س)
Dec. 31, 2017
USD ($)
Dec. 31, 2017
SAR (ر.س)
Schedule of Equity Method Investments [Line Items]          
Other | $   $ 733   $ 870  
Spare parts included in property and equipment, net on the balance sheets | $   1,597   954  
Total amounts of liabilities recorded | $   $ 144,807   $ 142,315  
AMAK          
Schedule of Equity Method Investments [Line Items]          
Accounts payable and accrued liabilities     ر.س 26,925,170   ر.س 17,858,012
Other     381,763   2,802,493
Accrued salaries and payroll expenses     1,450,012   2,012,113
Accounts payable and accrued liabilities     ر.س 28,756,945   ر.س 22,672,618
Payment received by CGM for rights to spare parts ر.س 4,500,000        
Economic value of forfeited spare parts 34,477,500        
Spare parts included in property and equipment, net on the balance sheets 4,500,000        
Total amounts of liabilities recorded ر.س 65,345,000