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Concentrations (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Concentrations (Details) [Line Items]
Number of major customers	2	2	2
Number of major suppliers	1	2
Customer One [Member]
Concentrations (Details) [Line Items]
Concentration risk, percentage	84.00%	21.00%	16.00%
Customer Two [Member]
Concentrations (Details) [Line Items]
Concentration risk, percentage	7.00%	15.00%	13.00%
Supplier One [Member]
Concentrations (Details) [Line Items]
Concentration risk, percentage	100.00%	31.00%
Supplier Two [Member]
Concentrations (Details) [Line Items]
Concentration risk, percentage		17.00%

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Number of customers.

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- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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