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Property and equipment, net (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Jul. 31, 2018 USD ($)	Dec. 31, 2019 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)	Feb. 28, 2018 ft²
Property and equipment, net
Financing lease liabilities		$ 32,582
Finance lease right-of-use assets, net		29,058
Costs for architectural and engineering studies and initial ground preparation		499,437		$ 422,982
Construction in Progress
Property and equipment, net
Costs for architectural and engineering studies and initial ground preparation		$ 116,387		$ 65,576
Office Building in Morges, Switzerland
Property and equipment, net
Initial lease term					15 years
Options to extend		true
Renewal term of agreement to rent					20 years
Square footage | ft²					100,000
Financing lease liabilities			$ 31,100
Finance lease right-of-use assets, net			29,100
Finance Lease, Lease Incentive Receivable			$ 2,000
Site preparation, design and construction costs		$ 13,800
Land in Y-PARC, Switzerland's largest technology park, Yverdon
Property and equipment, net
Purchase price	$ 4,800
Land in Y-PARC, Switzerland's largest technology park, Yverdon | Construction in Progress
Property and equipment, net
Costs for architectural and engineering studies and initial ground preparation		$ 82,800

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Area of a real estate property.

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