Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies- Concentrations of Credit Risk (Details)

v3.20.1
Summary of Significant Accounting Policies- Concentrations of Credit Risk (Details) - Customer Concentration Risk
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Sales Revenue, Net | Calrios    
Concentration risk, percentage 69.00% 88.00%
Sales Revenue, Net | P. Kay Metals    
Concentration risk, percentage 28.00% 0.00%
Accounts Receivable | Calrios    
Concentration risk, percentage 100.00% 95.00%
Accounts Receivable | P. Kay Metals    
Concentration risk, percentage 0.00% 0.00%