Condensed Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 20,922	$ 26,169
Restricted time deposits	5,277	5,190
Accounts receivable, net	15,373	14,837
Inventories, net	10,185	10,226
Other current assets	3,461	6,851
Total current assets	55,218	63,273
Property and equipment, net	3,295	4,050
Intangible assets, net	1,067	1,153
Other assets	423	608
Total assets	60,003	69,084
Current liabilities:
Deferred consideration payable	233	233
Accounts payable	8,473	5,749
Accrued liabilities	9,252	9,972
Deferred revenue	6,783	7,642
Other current liabilities	135	196
Total current liabilities	24,876	23,792
Other long-term liabilities	3,819	3,846
Commitments and contingencies (Note 12)
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---8,429 shares in 2016 and 8,341 shares in 2015; Outstanding — 6,839 shares in 2016 and 6,982 shares in 2015	270	270
Additional paid-in capital	1,286,953	1,285,787
Accumulated deficit	(1,236,703)	(1,227,671)
Treasury stock — 1,591 shares in 2016 and 1,359 shares in 2015	(17,730)	(15,355)
Accumulated other comprehensive loss	(1,482)	(1,585)
Total stockholders' equity	31,308	41,446
Total liabilities and stockholders' equity	$ 60,003	$ 69,084