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Significant Risks and Uncertainties Including Business and Credit Concentrations	3 Months Ended
	Mar. 31, 2022
Risks and Uncertainties [Abstract]
Significant Risks and Uncertainties Including Business and Credit Concentrations	Significant Risks and Uncertainties Including Business and Credit Concentrations Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash equivalents and trade receivables. The Company’s cash and cash equivalents are held by large, credit worthy financial institutions. The Company invests its excess cash in money market funds. The Company has established guidelines relative to credit ratings, diversification and maturities that seek to maintain safety and liquidity. Deposits in these banks may exceed the amounts of insurance provided on such deposits. To date, the Company has not experienced any losses on its deposits of cash and cash equivalents. The Company controls credit risk through credit approvals and monitoring procedures. The Company performs periodic credit evaluations of its customers and generally does not require collateral. Accounts receivable are recorded net of an allowance for doubtful accounts. The allowance for doubtful accounts is based on management’s assessment of the collectability of specific customer accounts and the aging of the related invoices and represents the Company’s best estimate of expected credit losses in its existing trade accounts receivable. At each of March 31, 2022 and December 31, 2021, the Company had not recorded any material allowance for doubtful accounts. Most of the Company’s customers are located in the United States and Asia Pacific. For the three months ended March 31, 2022, three customers accounted for 18%, 13% and 10% of revenue. For the three months ended March 31, 2021, two customers accounted for 11% and 10% of revenue. As of March 31, 2022, four customers comprised 22%, 14%, 11% and 10% of accounts receivable. As of December 31, 2021, three customers accounted for 15%, 11% and 11% of accounts receivable.