Condensed Consolidated Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 51,603	$ 71,127
Marketable securities	46,671	16,124
Total cash, cash equivalents, and marketable securities	98,274	87,251
Trade accounts receivable, net of allowance of $1,153 and $1,159	79,121	79,896
Deferred income taxes	4,820	4,770
Income taxes receivable	21,272	9,266
Other current assets	7,680	7,473
Total current assets	211,167	188,656
Property and equipment, net	11,601	11,010
Long-term deferred income taxes	32,673	33,769
Long-term other assets	1,991	2,905
Intangible assets, net	72,177	80,684
Goodwill	20,451	20,451
Total assets	350,060	337,475
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	6,001	6,286
Accrued expenses	19,959	24,736
Accrued compensation and related expenses	23,243	27,125
Deferred revenue	67,316	56,903
Total current liabilities	116,519	115,050
Income taxes payable	2,380	5,783
Long-term deferred revenue	15,722	17,751
Other long-term liabilities	3,674	3,221
Total liabilities	138,295	141,805
Commitments and contingencies
Stockholders' equity:
Preferred stock, 1,000 shares authorized; no shares issued and outstanding
Common stock, 70,000 shares authorized; 37,681 shares and 37,250 shares issued and outstanding	377	372
Additional paid-in capital	129,050	122,607
Retained earnings	80,016	71,431
Accumulated other comprehensive income	2,322	1,260
Total stockholders' equity	211,765	195,670
Total liabilities and stockholders' equity	$ 350,060	$ 337,475