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%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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