v3.19.3.a.u2

Goodwill - impairments (Details) - USD ($) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2019 | Dec. 31, 2018 | Nov. 30, 2018
Goodwill, Impaired [Abstract] |  |  |  |
Goodwill | $ 21.3 | $ 21.3 | $ 21.3 |
Amount of carrying value in excess of fair value |  | 0.0 | 0.0 |
Curtis Palmer |  |  |  |
Goodwill, Impaired [Abstract] |  |  |  |
Goodwill | 14.4 | 14.4 | 14.4 |
Fair value in excess of carrying value |  |  |  | $ 8.3
Fair value in excess of carrying value (as a percent) |  |  |  | 9.00%
Impairment of goodwill | 14.7 |  |  |
Morris And Nipigon |  |  |  |
Goodwill, Impaired [Abstract] |  |  |  |
Fair value in excess of carrying value | $ 111.7 |  |  |
Fair value in excess of carrying value (as a percent) | 118.00% |  |  |
Impairment of goodwill | $ 0.0 |  |  |
Morris |  |  |  |
Goodwill, Impaired [Abstract] |  |  |  |
Goodwill | 3.3 | 3.3 | 3.3 |
Nipigon |  |  |  |
Goodwill, Impaired [Abstract] |  |  |  |
Goodwill | $ 3.6 | $ 3.6 | $ 3.6 |

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