Discontinued Operations (Details) - Discontinued Operations, Disposed of by Sale [Member] - Media [Member] - USD ($) $ in Millions |
Jul. 01, 2015 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|---|
| Discontinued operations | |||
| Assets of discontinued operations | $ 2.3 | $ 0.0 | $ 0.0 |
| Liabilities of discontinued operations | 3.5 | 0.0 | 0.0 |
| Pre-tax gain on sale of discontinued operation | 2.3 | ||
| Asset and lease impairment charges, severance expenses and transactions costs included in net loss on sale of discontinued operations | $ 0.9 | ||
| Accrued Liabilities [Member] | |||
| Discontinued operations | |||
| Lease impairment liability | $ 0.2 | $ 0.5 |