Schedule of Geographic Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 41.5	$ 15.6	$ 64.3	$ 67.9
Total non-current assets excluding goodwill	118.5		118.5		$ 131.4
UNITED KINGDOM
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	29.9	9.2	40.8	47.6
Total non-current assets excluding goodwill	93.9		93.9		101.8
GREECE
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	3.9	2.6	6.2	7.4
Total non-current assets excluding goodwill	13.3		13.3		18.2
ITALY
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	0.9	1.4	2.2	3.6
Total non-current assets excluding goodwill	1.8		1.8		2.1
CANADA
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	0.3		2.1
RestOfWorldMember
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	6.5	$ 2.4	13.0	$ 9.3
Total non-current assets excluding goodwill	$ 9.5		$ 9.5		$ 9.3