Condensed consolidated balance sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents (Note 3)	$ 14,916	$ 14,906
Short-term investments (Note 7)	14,109	24,191
Accounts and other amounts receivable	72	65
Prepayments and deposits	578	139
Deferred offering costs	87
Total current assets	29,762	39,301
Property and equipment	85	105
Long-term investments (Note 7)	0	2,003
Other	12	13
Total assets	29,859	41,422
Current liabilities
Accounts payable and accrued liabilities	3,983	5,203
Total current liabilities	3,983	5,203
Warrant liabilities (Note 7)	66	72
Total liabilities	4,049	5,275
Share capital: (Note 5)
Common stock	0	0
Additional paid-in capital	126,383	125,567
Accumulated deficit	(100,577)	(89,416)
Accumulated other comprehensive income (loss)	4	(4)
Total stockholders' equity	25,810	36,147
Total liabilities and stockholders' equity	$ 29,859	$ 41,422