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Earnings (Loss) per share - Schedule of Basic and Diluted Earnings (Loss) Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Net income (loss) from continuing operations | $ 4,462 | $ (10,761) | $ 1,549 | $ (28,869)
Net loss from discontinued operations | 0 | (3,334) | (21,124) | (18,360)
Net income (loss) | $ 4,462 | $ (14,095) | $ (19,575) | $ (47,229)
Weighted average number of shares outstanding: |  |  |  |
Basic and diluted (in shares) | 78,199,579 | 55,390,247 | 73,941,595 | 54,665,776
Basic and diluted earnings (loss) per share: |  |  |  |
Continuing operations (in usd per share) | $ 0.06 | $ (0.19) | $ 0.02 | $ (0.53)
Discontinued operations (in usd per share) | 0.00 | (0.06) | (0.29) | (0.34)
Total net income (loss), basic (in usd per share) | $ 0.06 | $ (0.25) | $ (0.26) | $ (0.86)

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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=109260490&loc=d3e1337-109256 + Details
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