General and Administrative Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
General and Administrative Expenses
Depreciation and amortisation	$ 76	$ 45
Total	4,218	3,085
General and administrative expenses
General and Administrative Expenses
Other general and administrative expenses	2,797	1,649
Staff costs	1,378	1,420
Depreciation and amortisation	43	16
Total	4,218	3,085
Other general and administrative expenses
Other general and administrative expenses
Advisory and external consultancy expenses	700	400
Tax consulting, payroll accounting, accounting and auditing expenses	200	100
Infrastructure expenses	400	300
Legal expenses	1,000	300
Travel expenses	100	100
Supervisory board fees and expenses	100	100
Other expenses	$ 300	$ 300