Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands |
9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2016 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Income Statement [Abstract] | ||||
| Net revenues | $ 10,914 | $ 6,408 | $ 8,911 | $ 13,928 |
| Cost of revenue | 824 | 1,067 | 1,577 | 1,860 |
| Gross profit | 10,090 | 5,341 | 7,334 | 12,068 |
| Operating expenses: | ||||
| Sales and marketing expenses | 9,689 | 5,688 | 8,279 | 5,735 |
| Research and development expenses | 9,613 | 5,357 | 7,900 | 4,633 |
| General and administrative expenses | 24,722 | 10,723 | 14,935 | 7,990 |
| Total operating expenses | 44,024 | 21,768 | 31,114 | 18,358 |
| Loss from operations | (33,934) | (16,427) | (23,780) | (6,290) |
| Other income (expense), net | (12,872) | (1,483) | (3,193) | 85 |
| Loss before provision for income taxes | (46,806) | (17,910) | (26,973) | (6,205) |
| Provision for income taxes | 5 | 5 | 6 | 5 |
| Net loss | (46,811) | (17,915) | (26,979) | (6,210) |
| Accretion of redeemable convertible preferred stock | (4,470) | (2,383) | (3,204) | (3,330) |
| Net loss attributable to common stockholders | $ (51,281) | $ (20,298) | $ (30,183) | $ (9,540) |
| Basic and diluted net loss per share | $ (5.94) | $ (10.37) | $ (14.59) | $ (6.73) |
| Weighted-average shares used to compute basic and diluted net loss per share | 8,640,178 | 1,957,596 | 2,068,334 | 1,416,732 |
| Comprehensive loss: | ||||
| Net loss | $ (46,811) | $ (17,915) | $ (26,979) | $ (6,210) |
| Net change in unrealized loss on marketable securities, net of income taxes | (62) | |||
| Total comprehensive loss | $ (46,873) | $ (17,915) | $ (26,979) | $ (6,210) |
| X | ||||||||||
- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition The aggregate cost of goods produced and sold and services rendered during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. No definition available.
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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. No definition available.
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- References No definition available.
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| X | ||||||||||
- Definition The net result for the period of deducting operating expenses from operating revenues. No definition available.
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- Definition Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The aggregate total amount of expenses directly related to the marketing or selling of products or services. No definition available.
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- Definition Amount of decrease to net income for accretion of temporary equity to its redemption value to derive net income apportioned to common stockholders. No definition available.
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- Definition Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS). No definition available.
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