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Summary of Significant Accounting Policies - Schedule of Common Share Equivalents Included from Computation of Net Loss Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Earnings Per Share [Abstract] |  |  |  |
Net loss and comprehensive loss used in the calculation of basic and diluted loss per share | $ (6,144) | $ (2,893) | $ (16,907) | $ (11,867)
Net loss per share, basic and diluted | $ (5.51) | $ (4.01) | $ (16.81) | $ (18.74)
Weighted-average common shares outstanding, basic and diluted | 1,114,133 | 720,829 | 1,006,008 | 633,187

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- Definition Net loss and comprehensive loss used in the calculation of basic and diluted loss per share. + References No definition available. + Details
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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. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1337-109256 + Details
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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). + References No definition available. + Details
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