Consolidated Balance Sheets (Unaudited) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current Assets:
Cash and cash equivalents	$ 73,586	$ 86,927
Marketable investments (Note 4)	139,033	119,990
Accounts receivable, net	43,159	73,574
Deferred income taxes	1,790	4,089
Deferred commissions	9,406	12,598
Prepaid expenses and other current assets	16,181	16,733
Restricted cash	2,216	3,879
Total current assets	285,371	317,790
Long-term marketable securities (Note 4)	9,539	9,117
Restricted cash	0	11,609
Property and equipment, net	51,490	19,838
Deferred income taxes	4,550	7,779
Goodwill	71,677	67,958
Intangible assets, net	11,170	8,487
Non-marketable investments (Note 5)	7,684	7,359
Other assets	488	540
Total assets	441,969	450,477
Current Liabilities:
Accounts payable	5,037	3,644
Accrued expenses	27,959	36,485
Deferred revenue	117,547	131,521
Total current liabilities	150,543	171,650
Non-current liabilities	13,059	6,920
Total liabilities	163,602	178,570
Stockholders' Equity (Note 8):
Preferred stock, $.01 par value Authorized - 500 shares, issued and outstanding - none
Common stock, $.01 par value; Authorized - 125,000 shares; Issued - 30,779 and 30,500 as of September 30, 2011 and December 31, 2010, respectively; Outstanding - 22,564 and 22,812 as of September 30, 2011 and December 31, 2010, respectively	307	305
Additional paid--in capital	368,462	358,017
Retained earnings	95,765	81,652
Treasury stock - 8,215 and 7,688 as of September 30, 2011 and December 31, 2010, respectively, at cost	(181,000)	(162,595)
Accumulated other comprehensive loss	(5,167)	(5,472)
Total stockholders' equity	278,367	271,907
Total liabilities and stockholders' equity	$ 441,969	$ 450,477