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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Inventories and Significant Suppliers - Purchases from Significant Suppliers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Qorvo International Pte Ltd.
Concentration Risk [Line Items]
Inventory purchases	$ 8,472	$ 0	$ 29,679	$ 0
Zhejiang Zhen You Electronics Co. Ltd.
Concentration Risk [Line Items]
Inventory purchases			$ 0		$ 11,394
Supplier Concentration Risk \| Inventory Purchases \| Qorvo International Pte Ltd.
Concentration Risk [Line Items]
Concentration risk percentage	13.00%	0.00%	13.40%	0.00%
Supplier Concentration Risk \| Accounts Payable \| Zhejiang Zhen You Electronics Co. Ltd.
Concentration Risk [Line Items]
Concentration risk percentage			0.00%		11.10%