CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 48,520	$ 12,830
Short-term investments	41,186	17,873
Accounts receivable, net of allowances of $301 in 2011 and $398 in 2010	18,238	19,908
Prepaid and other current assets	5,444	4,441
Total current assets	113,388	55,052
Long-term investments	782	787
Property and equipment, net	7,338	8,016
Goodwill	11,568	8,031
Intangible assets, net	6,270	4,274
Deferred income taxes, noncurrent	1,645	1,645
Deposits and other assets	5,172	2,000
Total assets	146,163	79,805
Current liabilities:
Accounts payable	2,074	3,299
Accrued payroll and related expenses	2,937	2,859
Accrued expenses	6,078	6,169
Deferred income taxes	1,691	1,691
Deferred revenue	28,601	28,417
Capital lease obligations, short-term	1,159	1,119
Total current liabilities	42,540	43,554
Long-term deferred revenue	3,445	4,388
Long-term deferred income tax	304
Other liabilities	1,448	1,619
Capital lease obligations, long-term	1,522	2,162
4.75% Convertible Senior Notes due 2016	80,500
Total liabilities	129,759	51,723
Stockholders' equity:
Common stock, $0.001 par value; 100,000 shares authorized; 31,980 and 32,624 shares issued and outstanding at June 30, 2011 and December 31, 2010, respectively	33	31
Treasury Stock	(2)
Additional paid-in capital	217,846	222,363
Accumulated other comprehensive income	(88)	(98)
Accumulated deficit	(201,385)	(194,214)
Total stockholders' equity	16,404	28,082
Total liabilities and stockholders' equity	$ 146,163	$ 79,805