Nature of Business, Liquidity, Basis of Presentation and Summary of Significant Accounting Policies - Concentration of Risk (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Asia Pacific | Sales Revenue, Net | Geographic Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	23.00%	14.00%
The Southern Company | Sales Revenue, Net | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	34.00%	51.00%
SK (Korea) | Sales Revenue, Net | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	23.00%
SK (Korea) | Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage		64.00%
Costco Wholesale Company | Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	19.00%
The Kraft Company | Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	17.00%