Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 13,472	$ 16,072
Accounts receivable, net of allowance for doubtful accounts of $0 and $142, respectively	10,934	12,361
Prepaid Expense, Current	1,590	1,344
Other current assets	211	225
Total current assets	26,207	30,002
Property and equipment, net	2,202	2,485
Other assets	709	688
Total assets	29,118	33,175
Current liabilities:
Accounts payable	6,583	7,069
Accrued liabilities	3,609	3,874
Deferred revenue, short-term	3,126	2,412
Total current liabilities	13,318	13,355
Deferred revenue, long-term	91	67
Other long-term liabilities	1,034	1,123
Total liabilities	14,443	14,545
Stockholders’ equity:
Common stock	68	68
Additional paid-in capital	224,137	223,777
Accumulated deficit	(209,530)	(205,215)
Total stockholders’ equity	14,675	18,630
Total liabilities and stockholders’ equity	$ 29,118	$ 33,175

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).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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.