Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 19,244	$ 120,585
Investments	58,519	11,839
Trade accounts receivable	34	77
Prepaid expenses	468	1,638
Other current assets	183	12
Total current assets	78,448	134,151
Property and equipment, net	4,258	5,016
Intellectual property, net	146	157
Total assets	82,852	139,324
Current liabilities:
Accounts payable	992	2,623
Accrued liabilities	3,009	2,543
Deferred revenue and income	35	127
Capital lease obligations	0	13
Total current liabilities	4,036	5,306
Long-term deferred income	1,000	1,000
Total liabilities	5,036	6,306
Commitments and contingencies see Note 16, Commitments	0	0
Stockholders' equity:
Common stock, $0.001 par value	52	51
Preferred shares, $0.001 par value	0	0
Contributed capital	255,257	243,894
Accumulated deficit	(177,289)	(110,915)
Accumulated other comprehensive loss	(204)	(12)
Total stockholders' equity	77,816	133,018
Total liabilities and stockholders' equity	$ 82,852	$ 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.

Name:	us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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).