Segment Information (Details Textual) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($) segment	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Revenue from External Customer [Line Items]
Long-lived assets related to operations in Denmark	$ 3,601.2	$ 3,182.4	$ 2,501.8
Segment Information (Textual) [Abstract]
Number of reportable segment | segment	1
Solothurn
Revenue from External Customer [Line Items]
Long-lived assets related to operations in Denmark	$ 1,748.5	1,215.7	545.5
DENMARK
Revenue from External Customer [Line Items]
Long-lived assets related to operations in Denmark	$ 646.5	$ 707.1	$ 643.6