Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 48,449	$ 40,823
Marketable securities	15,219	26,915
Trade accounts receivable, net	3,790	6,404
Other current assets	1,888	2,171
Total current assets	69,346	76,313
Property and equipment, net	4,103	4,236
Intangibles, net	6,478	6,381
Goodwill	1,114	1,114
Other assets	324	326
Total assets	81,365	88,370
Current liabilities:
Accounts payable and other accrued liabilities	1,464	1,914
Deferred revenue	2,839	3,124
Total current liabilities	4,303	5,038
Deferred rent and other long-term liabilities	941	985
Total liabilities	5,244	6,023
Commitments and contingencies (Note 12)
Shareholders’ equity:
Preferred stock (par value $0.001 per share, 2,500 authorized, 10 shares issued and outstanding at March 31, 2018 and December 31, 2017)	50	50
Common stock (par value $0.001 per share, 50,000 authorized, 11,847 and 11,651 shares issued and outstanding at March 31, 2018 and December 31, 2017, respectively)	12	12
Additional paid-in capital	157,540	155,793
Accumulated deficit	(81,481)	(73,508)
Total shareholders’ equity	76,121	82,347
Total liabilities and shareholders’ equity	$ 81,365	$ 88,370

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

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.