Summary of Significant Accounting Policies - Concentration of Credit Risk and Significant Customers (Details) - Customer Concentration Risk |
12 Months Ended | ||
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Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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Customer A | REVENUES | |||
Concentration Risk [Line Items] | |||
Concentration risk, percentage | 15.00% | 60.00% | 29.00% |
Customer A | ACCOUNTS RECEIVABLE | |||
Concentration Risk [Line Items] | |||
Concentration risk, percentage | 73.00% | 65.00% | |
Customer B | REVENUES | |||
Concentration Risk [Line Items] | |||
Concentration risk, percentage | 20.00% | 8.00% | 30.00% |
Customer B | ACCOUNTS RECEIVABLE | |||
Concentration Risk [Line Items] | |||
Concentration risk, percentage | 2.00% | 3.00% |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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