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Organization and Significant Accounting Policies - Revenues and Gross Accounts Receivable by Customer (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue | Distributor A
Concentration Risk [Line Items]
Concentration risk (as a percent)	23.00%	17.00%	15.00%
Revenue | Distributor B
Concentration Risk [Line Items]
Concentration risk (as a percent)	11.00%	12.00%	12.00%
Revenue | Distributor C
Concentration Risk [Line Items]
Concentration risk (as a percent)	18.00%	10.00%
Revenue | Distributor D
Concentration Risk [Line Items]
Concentration risk (as a percent)	11.00%
Gross Accounts Receivable | Distributor A
Concentration Risk [Line Items]
Concentration risk (as a percent)	19.00%	21.00%
Gross Accounts Receivable | Distributor B
Concentration Risk [Line Items]
Concentration risk (as a percent)	10.00%
Gross Accounts Receivable | Distributor C
Concentration Risk [Line Items]
Concentration risk (as a percent)	12.00%

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