Balance Sheet Components - Schedule of Net Accounts Receivable Balance Concentrations by Major Category (Parenthetical) (Details) |
3 Months Ended | 12 Months Ended |
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Mar. 31, 2018
USD ($)
Customer
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Dec. 31, 2017
USD ($)
Customer
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| Accounts Notes And Loans Receivable [Line Items] | ||
| Accounts receivable, gross | $ 39,088,000 | $ 34,710,000 |
| Customer Concentration Risk | Business To Business Receivables | ||
| Accounts Notes And Loans Receivable [Line Items] | ||
| Number of customers | Customer | 1 | 1 |
| Accounts receivable, gross | $ 9,461,000 | $ 10,394,000 |
| Credit insurance policy, deductible amount | $ 1,000,000 | |
| Credit insurance policy, retention percentage | 10.00% | |
| Customer Concentration Risk | Business To Business Receivables | Maximum | ||
| Accounts Notes And Loans Receivable [Line Items] | ||
| Credit insurance policy, coverage limit | $ 18,000,000 | $ 12,000,000 |
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- Definition Credit insurance policy coverage limit. No definition available.
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- Definition Credit insurance policy, deductible amount. No definition available.
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- Definition Credit insurance policy retention percentage. No definition available.
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- Definition Number of customers. No definition available.
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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 Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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