Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 65,469	$ 72,026
Marketable securities		12,015
Accounts receivable	274	215
Prepaid expenses and other current assets	371	686
Total current assets	66,114	84,942
Property, plant and equipment, net	2,130	2,476
Prepaid expenses, long term (note 7)	1,700
Total assets	69,944	87,418
Current liabilities:
Accounts payable and accrued expenses (note 8)	2,823	2,664
Deferred revenue	2,513	11,622
Total current liabilities	5,336	14,286
Deferred revenue, less current portion		157
Deferred tenant inducements	149	196
Total liabilities	5,485	14,639
Shareholders’ equity:
Common shares, without par value; unlimited shares authorized; issued and outstanding: 14,344,267 (December 31, 2014 - 14,181,333)	148,359	147,157
Additional paid-in capital	32,844	30,346
Accumulated deficit	(115,754)	(103,734)
Accumulated other comprehensive loss	(990)	(990)
Shareholders’ equity	64,459	72,779
Total liabilities and shareholders’ equity	$ 69,944	$ 87,418
Commitments and contingencies (note 11)