CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents	$ 49,493	$ 6,593
Short-term investments	72,834	22,710
Other current assets	3,075	3,354
Total current assets	125,402	32,657
Property and equipment, net	614	496
Other long-term assets	2,001	326
Total assets	128,017	33,479
Current liabilities
Accounts payable and accrued liabilities	9,798	5,396
Total current liabilities	9,798	5,396
Other liability	43	21
Total current liabilities	$ 9,841	$ 5,417
Commitments and contingencies
Stockholders' equity
Preferred stock, $0.001 par value, 10,000,000 shares authorized; none issued and outstanding at both December 31, 2015 and December 31, 2014	$ 0	$ 0
Common stock, $0.001 par value; 100,000,000 authorized; 19,282,935 and 13,566,726 issued and outstanding at December 31, 2015 and December 31, 2014, respectively	19	14
Additional paid-in capital	415,232	260,616
Accumulated other comprehensive income	9,558	9,521
Accumulated deficit	(306,633)	(242,089)
Total stockholders' equity	118,176	28,062
Total liabilities and stockholders' equity	$ 128,017	$ 33,479