Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Total Revenue | $ 3,031 | $ 5 | $ 127 | $ 343 | $ 332 | $ 349 | $ 351 | $ 693 | $ 3,506 | $ 1,725 |
| Operating expenses | 14,923 | 9,392 | 6,805 | 9,126 | 6,271 | 6,299 | 6,823 | 5,107 | 40,246 | 24,500 |
| Other income | 273 | 43 | 39 | 18 | 21 | 22 | 24 | 31 | 225 | 0 |
| Net loss | $ (11,619) | $ (9,344) | $ (6,639) | $ (8,765) | $ (5,918) | $ (5,928) | $ (6,448) | $ (4,383) | $ (36,367) | $ (22,677) |
| Basic and diluted net loss per common share | $ (0.37) | $ (0.32) | $ (0.23) | $ (0.35) | $ (0.26) | $ (0.26) | $ (0.28) | $ (0.20) | $ (1.27) | $ (1.00) |
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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. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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/disclosureRef
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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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- Definition Amount of income related to nonoperating activities, classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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