Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 56,064	$ 58,651
Accounts receivable	386	315
Prepaid expenses and other current assets	1,818	1,900
Total current assets	58,268	60,866
Prepaid expenses, long term	1,094	1,094
Property, plant and equipment, net	1,790	1,989
Total assets	61,152	63,949
Current liabilities:
Accounts payable and accrued expenses (note 6)	2,872	2,625
Deferred revenue		157
Total current liabilities	2,872	2,782
Deferred tenant inducements	117	133
Total liabilities	2,989	2,915
Shareholders’ equity:
Common shares, without par value; unlimited shares authorized; issued and outstanding: 14,401,582 (December 31, 2015 - 14,385,336)	148,728	148,634
Additional paid-in capital	33,381	33,083
Accumulated deficit	(122,956)	(119,693)
Accumulated other comprehensive loss	(990)	(990)
Shareholders' equity	58,163	61,034
Total liabilities and shareholders’ equity	$ 61,152	$ 63,949
Commitments and contingencies (note 9)