Annual report pursuant to Section 13 and 15(d)

AMAK Summary of Significant Accounting Policies (Details)

v3.20.4
AMAK Summary of Significant Accounting Policies (Details)
ر.س in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2020
SAR (ر.س)
Dec. 31, 2020
ر.س / $
Dec. 31, 2019
SAR (ر.س)
Dec. 31, 2018
SAR (ر.س)
Jun. 30, 1986
Property, Plant and Equipment [Line Items]          
Foreign exchange rate (SR per USD) | ر.س / $   3.75      
AMAK          
Property, Plant and Equipment [Line Items]          
Operating lease expense | ر.س ر.س 2,531   ر.س 4,015 ر.س 1,619  
Zakat tax rate   2.50%      
Non-Saudi tax rate 20.00% 20.00% 20.00% 20.00%  
AMAK | Riyals          
Property, Plant and Equipment [Line Items]          
Foreign exchange rate (SR per USD)         3.75
AMAK | Other assets | Minimum          
Property, Plant and Equipment [Line Items]          
Useful life   3 years      
AMAK | Other assets | Maximum          
Property, Plant and Equipment [Line Items]          
Useful life   20 years