Condensed consolidated balance sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents (Note 3)	$ 86,225	$ 39,526
Short-term investments (Note 8)	59,711	34,956
Receivables, prepayments and deposits	676	314
Total current assets	146,612	74,796
Property and equipment, net	791	89
Long-term investments (Note 8)	16,666	38,458
Total assets	164,069	113,343
Current liabilities
Accounts payable and other liabilities	8,564	4,792
Total current liabilities	8,564	4,792
Other liabilities (Note 4)	142	131
Total liabilities	8,706	4,923
Share capital: (Note 5)
Common stock	0	0
Additional paid-in capital	292,405	219,986
Accumulated deficit	(137,034)	(111,276)
Accumulated other comprehensive loss	(8)	(290)
Total stockholders' equity	155,363	108,420
Total liabilities and stockholders' equity	$ 164,069	$ 113,343