Annual report pursuant to Section 13 and 15(d)

AMAK GENERAL AND ADMINISTRATIVE EXPENSES (Details)

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AMAK GENERAL AND ADMINISTRATIVE EXPENSES (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2018
USD ($)
Dec. 31, 2018
SAR (ر.س)
Dec. 31, 2017
USD ($)
Dec. 31, 2017
SAR (ر.س)
Dec. 31, 2016
USD ($)
Dec. 31, 2016
SAR (ر.س)
Schedule of Equity Method Investments [Line Items]            
Mine closure and environmental | $ $ 745   $ 593   $ 622  
General and administrative expenses | $ $ 22,396   $ 22,587   $ 20,434  
AMAK            
Schedule of Equity Method Investments [Line Items]            
Wages, salaries and related costs   ر.س 17,036,965   ر.س 14,837,901   ر.س 10,195,511
Mine closure and environmental   1,287,698   1,641,580   1,623,831
Office expenses   9,287,218   6,589,090   5,491,679
Travel and accommodation   593,046   2,958,938   1,477,413
Professional fees   1,271,071   2,272,224   8,169,121
General and administrative expenses   ر.س 29,475,998   ر.س 28,299,733   ر.س 26,957,555