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v3.19.1

Share Capital (Equity Financing) (Details) $ / shares in Units, $ in Millions |  | 2 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Feb. 09, 2017 USD ($) $ / shares shares | Mar. 08, 2019 USD ($) $ / shares shares | Dec. 31, 2018 $ / shares | Dec. 31, 2017 $ / shares
Equity Financing [Line Items] |  |  |  |
Equity financing (in shares) | shares | 31,450,000 |  |  |
Share price (usd per share) | (per share) | $ 7.95 |  | $ 6.44 | $ 9.40
Gross proceeds from equity financing | $ 250.0 |  |  |
Transaction costs, equity financing | 10.9 |  |  |
Repurchased and canceled (in shares) | shares |  | 2,444,352 |  |
Repurchased and canceled |  | $ 10.0 |  |
Repurchased and canceled (usd per share) | $ / shares |  | $ 4.07 |  |
Equity Financing [Member] |  |  |  |
Equity Financing [Line Items] |  |  |  |
Deferred tax assets | $ 2.7 |  |  |

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