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Inventories and Significant Suppliers - Narrative (Details) - Zhejiang Zhen You Electronics Co. Ltd. - Supplier concentration risk - Accounts payable $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($)
Related Party Transaction [Line Items]
Inventory purchases	$ 9.4
Concentration risk percentage	11.00%

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- Definition

Inventory Purchases

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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

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