CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 104,087	$ 132,496
Accounts receivable and accrued income	4,190	3,680
Accounts receivable and accrued income from related party	1,627	5,500
Prepaid expenses	889	996
Other current assets	632	1,274
Total current assets	111,425	143,946
Non-current assets
Property, plant and equipment, net	35,410	35,702
Intangible assets, net	8,746	8,324
Goodwill	505	465
Other non-current assets	1,879	1,828
Total non-current assets	46,540	46,319
Total assets	157,965	190,265
Current liabilities
Accounts payable	3,458	5,524
Accrued expenses and other current liabilities	9,440	9,766
Current portion of long-term debt	4,319	605
Current portion of deferred rent	710	684
Current portion of deferred revenue	5,203	6,142
Total current liabilities	23,130	22,721
Non-current liabilities
Long-term debt, net of current portion	16,153	19,631
Deferred rent, net of current portion	8,494	6,781
Deferred revenue, net of current portion	78,728	75,612
Contingent consideration	2,415	1,838
Other non-current liabilities	1,759	51
Total non-current liabilities	107,549	103,913
Total liabilities	130,679	126,634
Commitments and contingencies (See Note 13)
Shareholders' equity
Common shares, €0.05 par value: 60,000,000 shares authorized at June 30, 2017 and December 31, 2016 and 25,620,073 and 25,257,420 shares issued and outstanding at June 30, 2017 and December 31, 2016, respectively.	1,612	1,593
Additional paid-in-capital	469,104	464,653
Accumulated other comprehensive loss	(5,831)	(6,557)
Accumulated deficit	(437,599)	(396,058)
Total shareholders' equity	27,286	63,631
Total liabilities and shareholders' equity	$ 157,965	$ 190,265