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Summary of Significant Accounting Policies (Schedule of Accounts Receivable and Concentration of Credit Risk) (Details) - Sales Revenue, Net [Member]	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Ford Motor Company [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Concentration risk percentage	11.00%	11.00%	12.00%
Volvo [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Concentration risk percentage	8.00%	8.00%	8.00%

X

- Definition

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.

+ References

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-Publisher FASB
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- Definition

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+ References

No definition available.

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