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v3.19.2

Summary of significant accounting policies - Immaterial Correction of an Error (Details) - $ / shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Weighted average number of shares outstanding: |  |  |  |
Basic (in shares) | 79,388,383 | 78,196,959 | 79,297,599 | 74,885,746
Diluted (in shares) | 81,132,304 | 78,196,959 | 80,443,530 | 74,885,746
Basic: |  |  |  |
Continuing operations (in usd per share) | $ 0.01 | $ 0.03 | $ 0.02 | $ (0.04)
Discontinued operations (in usd per share) | 0.00 | 0.00 | 0.00 | (0.28)
Net income (loss) - basic (in usd per share) | 0.01 | 0.03 | 0.02 | (0.32)
Diluted: |  |  |  |
Continuing operations (in usd per share) | 0.01 | 0.03 | 0.02 | (0.04)
Discontinued operations (in usd per share) | 0.00 | 0.00 | 0.00 | (0.28)
Net income (loss) - diluted (in usd per share) | $ 0.01 | $ 0.03 | $ 0.02 | $ (0.32)
Previously Reported |  |  |  |
Weighted average number of shares outstanding: |  |  |  |
Basic (in shares) |  | 75,282,042 |  | 71,318,930
Diluted (in shares) |  | 78,196,959 |  | 71,318,930
Basic: |  |  |  |
Continuing operations (in usd per share) |  | $ 0.04 |  | $ (0.04)
Discontinued operations (in usd per share) |  | 0.00 |  | (0.30)
Net income (loss) - basic (in usd per share) |  | 0.04 |  | (0.34)
Diluted: |  |  |  |
Continuing operations (in usd per share) |  | 0.03 |  | (0.04)
Discontinued operations (in usd per share) |  | 0.00 |  | (0.30)
Net income (loss) - diluted (in usd per share) |  | $ 0.03 |  | $ (0.34)
Restatement Adjustment |  |  |  |
Weighted average number of shares outstanding: |  |  |  |
Basic (in shares) |  | 78,196,959 |  | 74,885,746
Diluted (in shares) |  | 78,196,959 |  | 74,885,746
Basic: |  |  |  |
Continuing operations (in usd per share) |  | $ 0.03 |  | $ (0.04)
Discontinued operations (in usd per share) |  | 0.00 |  | (0.28)
Net income (loss) - basic (in usd per share) |  | 0.03 |  | (0.32)
Diluted: |  |  |  |
Continuing operations (in usd per share) |  | 0.03 |  | (0.04)
Discontinued operations (in usd per share) |  | 0.00 |  | (0.28)
Net income (loss) - diluted (in usd per share) |  | $ 0.03 |  | $ (0.32)

X
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