CONDENSED CONSOLIDATED BALANCE SHEET - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 9,917	$ 19,244
Investments	54,029	58,519
Trade accounts receivable	551	34
Inventory	4,357	0
Prepaid expenses	1,027	468
Other current assets	468	183
Total current assets	70,349	78,448
Property and equipment, net	3,912	4,258
Intellectual property, net	143	146
Total assets	74,404	82,852
Current liabilities:
Accounts payable	1,263	992
Accrued liabilities	2,944	3,009
Deferred revenue and income	1,042	35
Total current liabilities	5,249	4,036
Long-term deferred income	22	1,000
Total liabilities	5,271	5,036
Commitments and contingencies see Note 14, Commitments
Stockholders' equity:
Common stock, $0.001 par value; 75,000,000 common shares authorized with 51,404,551 shares issued and outstanding on September 30, 2016 and 55,000,000 authorized with 51,191,184 shares issued and outstanding on December 31, 2015	52	52
Preferred shares, $0.001 par value; 5,000,000 preferred shares authorized and none outstanding as of September 30, 2016 and December 31, 2015	0	0
Contributed capital	261,362	255,257
Accumulated deficit	(192,144)	(177,289)
Accumulated other comprehensive (loss)	(137)	(204)
Total stockholders' equity	69,133	77,816
Total liabilities and stockholders' equity	$ 74,404	$ 82,852

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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- 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).