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Inventories and Significant Suppliers - Purchases from Significant Suppliers (Details) - Supplier Concentration Risk - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Inventory Purchases | Qorvo International Pte Ltd.
Concentration Risk [Line Items]
Purchases from significant supplier		$ 43.5
Concentration risk percentage		14.20%
Accounts Payable | Zhejiang Zhen You Electronics Co. Ltd.
Concentration Risk [Line Items]
Purchases from significant supplier			$ 11.4
Concentration risk percentage	11.10%

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