Annual report pursuant to Section 13 and 15(d)

AMAK Development Costs (Details)

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AMAK Development Costs (Details) - AMAK - SAR (ر.س)
9 Months Ended 12 Months Ended
Sep. 30, 2020
Dec. 31, 2019
Dec. 31, 2018
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]      
Cost ر.س 289,973,237 ر.س 289,973,237  
Accumulated amortization (191,033,512) (168,705,573)  
Development costs, net 98,939,725 121,267,664  
Amortization expenses related to development costs ر.س 22,328,000 ر.س 34,014,000 ر.س 36,250,000