Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 25,116	$ 26,169
Restricted time deposits	272	5,190
Accounts receivable, net	14,295	14,837
Inventories	9,657	10,226
Other current assets	2,378	6,851
Total current assets	51,718	63,273
Property and equipment, net	3,130	4,050
Intangible assets, net	1,064	1,153
Other assets	348	608
Total assets	56,260	69,084
Current liabilities:
Deferred consideration payable	233	233
Accounts payable	8,353	5,749
Accrued liabilities	9,195	9,972
Deferred revenue	6,146	7,642
Other current liabilities	156	196
Total current liabilities	24,083	23,792
Long-term liabilities	3,478	3,846
Commitments and contingencies (Note 9)
Stockholders' equity:
Preferred Stock, $0.01 par value: Authorized — 1,000 shares; no shares issued or outstanding	0	0
Common Stock, $0.0017 par value: Authorized---16,000 shares; Issued---8,425 shares in 2016 and 8,341 shares in 2015; Outstanding — 6,802 shares in 2016 and 6,982 shares in 2015	270	270
Additional paid-in capital	1,287,336	1,285,787
Accumulated deficit	(1,239,308)	(1,227,671)
Treasury stock — 1,623 shares in 2016 and 1,359 shares in 2015	(18,098)	(15,355)
Accumulated other comprehensive loss	(1,501)	(1,585)
Total stockholders' equity	28,699	41,446
Total liabilities and stockholders' equity	$ 56,260	$ 69,084