Quarterly report pursuant to Section 13 or 15(d)

INVESTMENT IN AMAK AND DISCONTINUED OPERATIONS - Additional Information (Details)

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INVESTMENT IN AMAK AND DISCONTINUED OPERATIONS - Additional Information (Details)
ر.س in Millions, $ in Millions
3 Months Ended
Mar. 26, 2020
SAR (ر.س)
Mar. 26, 2020
USD ($)
shares
Sep. 22, 2019
SAR (ر.س)
Sep. 22, 2019
USD ($)
Mar. 31, 2021
USD ($)
ر.س / $
Sep. 30, 2020
SAR (ر.س)
Sep. 30, 2020
USD ($)
shares
Sep. 28, 2020
Schedule of Equity Method Investments [Line Items]                
Percentage of non-refundable deposit forfeited prior to long stop date             50.00%  
Equity method investment, shares sold (in shares) | shares             22,467,422  
Proceeds from sales deposit of equity method investments   $ 0.5            
Income taxes payable             $ 1.1  
Deposits forfeited             1.5  
Purchase price held by purchaser for tax obligations         $ 2.1      
Saudi Industrial Development Fund Limited Guarantee                
Schedule of Equity Method Investments [Line Items]                
Loan guarantee         41.00%      
Foreign taxes                
Schedule of Equity Method Investments [Line Items]                
Income taxes payable   0.3            
AMAK                
Schedule of Equity Method Investments [Line Items]                
Proceeds from sale of investment ر.س 40 $ 10.7 ر.س 265 $ 70.0   ر.س 224 $ 59.9  
Non-refundable deposit of amount sold, percentage         5.00%      
Non-refundable deposit of amount sold         $ 3.5      
Percentage of non-refundable deposit forfeited prior to long stop date               50.00%
Equity method investment, shares sold (in shares) | shares   4,000,000            
Prepaid expense         $ 0.8      
Foreign currency exchange rate | ر.س / $         3.75      
AMAK | Foreign taxes                
Schedule of Equity Method Investments [Line Items]                
Foreign income tax expense         $ 1.3