Condensed Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 15,899	$ 12,243
Short-term investments	48,971	48,961
Accounts and other receivables (net of allowances for doubtful accounts as of: June 30, 2011 - $29 and December 31, 2010 - $97)	1,299	815
Inventories	448	406
Deferred income taxes	342	342
Prepaid expenses and other current assets	617	3,821
Total current assets	67,576	66,588
Property and equipment, net	1,466	1,931
Intangibles and other assets, net	13,199	12,356
Total assets	82,241	80,875
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	764	393
Accrued compensation	2,374	3,507
Other current liabilities	968	1,488
Deferred revenue and customer advances	5,057	4,429
Total current liabilities	9,163	9,817
Long-term deferred revenue	14,795	16,494
Deferred income tax liabilities	342	342
Other long-term liabilities	478	538
Total liabilities	24,778	27,191
Contingencies (Note 15)
Stockholders' equity:
Common stock and additional paid-in capital - $0.001 par value; 100,000,000 shares authorized; shares issued: June 30, 2011 - 31,548,668 and December 31, 2010 - 31,016,812; shares outstanding: June 30, 2011 - 28,760,459 and December 31, 2010 - 28,228,603	180,194	176,515
Accumulated other comprehensive income	142	120
Accumulated deficit	(104,475)	(104,553)
Treasury stock at cost: June 30, 2011 and December 31, 2010 - 2,788,209 shares	(18,398)	(18,398)
Total stockholders' equity	57,463	53,684
Total liabilities and stockholders' equity	$ 82,241	$ 80,875