CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current assets
Cash and cash equivalents	$ 179,700	$ 171,310
Billed receivables, net of allowances of $4,477 and $5,738, respectively	69,046	77,773
Accrued receivables	7,129	9,578
Deferred income taxes, net	13,623	12,317
Recoverable income taxes	2,781
Prepaid expenses	9,486	13,369
Other current assets	9,474	10,462
Total current assets	291,239	294,809
Property and equipment, net	21,192	18,539
Software, net	24,006	25,366
Goodwill	215,864	203,935
Other intangible assets, net	19,783	20,448
Deferred income taxes, net	21,675	28,143
Other noncurrent assets	20,943	10,289
TOTAL ASSETS	614,702	601,529
Current liabilities
Accounts payable	11,425	15,263
Accrued employee compensation	26,573	26,174
Deferred revenue	123,855	121,936
Income taxes payable	1,166	6,181
Alliance agreement liability	1,600	1,917
Note payable under credit facility		75,000
Accrued and other current liabilities	21,351	24,293
Total current liabilities	185,970	270,764
Deferred revenue	32,487	31,045
Note payable under credit facility	75,000
Alliance agreement noncurrent liability	20,667	20,667
Other noncurrent liabilities	12,813	23,430
Total liabilities	326,937	345,906
Commitments and contingencies (Note 15)
Stockholders' equity
Preferred stock, $0.01 par value; 5,000,000 shares authorized; no shares issued and outstanding at September 30, 2011 and December 31, 2010
Common stock, $0.005 par value; 70,000,000 shares authorized; 40,821,516 shares issued at September 30, 2011 and December 31, 2010	204	204
Common stock warrants	24,003	24,003
Treasury stock, at cost, 7,317,302 and 7,548,752 shares outstanding at September 30, 2011 and December 31, 2010, respectively	(166,557)	(171,676)
Additional paid-in capital	318,766	312,947
Retained earnings	127,250	105,289
Accumulated other comprehensive loss	(15,901)	(15,144)
Total stockholders' equity	287,765	255,623
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 614,702	$ 601,529