Summary of Significant Accounting Policies - Schedule of Concentration of Credit Risk (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Clarios (successor of Johnson Controls Battery Group, Inc.) \| Revenue
Concentration risk	59.00%	91.00%	59.00%	81.00%
Clarios (successor of Johnson Controls Battery Group, Inc.) \| Accounts Receivable
Concentration risk			71.00%		95.00%
Ocean Partners USA, Inc. \| Revenue
Concentration risk	0.00%	5.00%	0.00%	15.00%
Ocean Partners USA, Inc. \| Accounts Receivable
Concentration risk			0.00%		0.00%
P. Kay Metals \| Revenue
Concentration risk	38.00%	0.00%	38.00%	0.00%
P. Kay Metals \| Accounts Receivable
Concentration risk			27.00%		0.00%