Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Schedule of Concentration of Credit Risk (Details)

v3.19.3
Summary of Significant Accounting Policies - Schedule of Concentration of Credit Risk (Details)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Clarios (successor of Johnson Controls Battery Group, Inc.) | Revenue          
Concentration risk 80.00% 95.00% 71.00% 86.00%  
Clarios (successor of Johnson Controls Battery Group, Inc.) | Accounts Receivable          
Concentration risk     76.00%   95.00%
Ocean Partners USA, Inc. | Revenue          
Concentration risk 0.00% 0.00% 0.00% 10.00%  
Ocean Partners USA, Inc. | Accounts Receivable          
Concentration risk     0.00%   0.00%
P. Kay Metals | Revenue          
Concentration risk 17.00% 0.00% 26.00% 0.00%  
P. Kay Metals | Accounts Receivable          
Concentration risk     24.00%   0.00%