Related Parties (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
|
| Related Parties | ||||
| Cash payments | $ 0.3 | $ 0.3 | ||
| Accounts Receivable | 0.1 | $ 0.1 | ||
| Option to extend | false | |||
| Other income | 0.3 | $ 0.4 | ||
| Flagship | Services agreement | ||||
| Related Parties | ||||
| Payment of general and administrative expenses | $ 0.3 | $ 0.5 | ||
| Cash payments | $ 0.2 | $ 0.4 | ||
| Amount due to related party | $ 0.0 | $ 0.0 | ||