Business, Product and Geographical Area Information and Concentration of Risk - Schedules of Concentration of Risk, by Risk Factor (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Geographic Concentration Risk [Member] | Net sales
Concentration Risk
Concentration risk, percentage	14.00%	15.00%	18.00%
Largest Customer [Member] | Customer Concentration Risk [Member] | Trade receivables
Concentration Risk
Concentration risk, percentage	41.00%	31.00%
Largest Customer [Member] | Customer Concentration Risk [Member] | Net sales
Concentration Risk
Concentration risk, percentage	25.00%	25.00%	27.00%
Second Largest Customer [Member] | Customer Concentration Risk [Member] | Trade receivables
Concentration Risk
Concentration risk, percentage	10.00%	11.00%
Second Largest Customer [Member] | Customer Concentration Risk [Member] | Net sales
Concentration Risk
Concentration risk, percentage	17.00%	15.00%	12.00%
Top five major suppliers [Member] | Supplier concentration risk | Aluminum
Concentration Risk
Concentration risk, percentage	74.00%	81.00%	85.00%
Largest supplier [Member] | Supplier concentration risk | Aluminum
Concentration Risk
Concentration risk, percentage	22.00%	22.00%	36.00%
Second and third largest suppliers [Member] | Supplier concentration risk | Aluminum
Concentration Risk
Concentration risk, percentage	32.00%	38.00%	33.00%