Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 72,033	$ 120,585
Investments	44,630	11,839
Trade accounts receivable	77	77
Prepaid expenses	2,312	1,638
Other current assets	1,224	12
Total current assets	120,276	134,151
Property and equipment, net	5,218	5,016
Intellectual property, net	154	157
Total assets	125,648	139,324
Current liabilities:
Accounts payable	2,673	2,623
Accrued liabilities	2,256	2,543
Deferred revenue and income	58	127
Capital lease obligations	0	13
Total current liabilities	4,987	5,306
Long-term deferred income	1,000	1,000
Total liabilities	$ 5,987	$ 6,306
Commitments and Contingencies
Stockholders' equity:
75,000,000 common shares authorized with 51,199,017 shares issued and outstanding on March 31, 2016 and 55,000,000 authorized with 51,191,184 shares issued and outstanding on December 31, 2015	$ 51	$ 51
5,000,000 preferred shares authorized and none outstanding as of March 31, 2016 and December 31, 2015	0	0
Contributed capital	245,608	243,894
Accumulated deficit	(125,989)	(110,915)
Accumulated other comprehensive (loss)	(9)	(12)
Total stockholders' equity	119,661	133,018
Total liabilities and stockholders' equity	$ 125,648	$ 139,324

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).