CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current assets
Cash and cash equivalents	$ 87,682	$ 197,098
Billed receivables, net of allowances of $8,020 and $4,843, respectively	135,094	93,355
Accrued receivables	36,325	6,693
Deferred income taxes, net	42,987	25,944
Recoverable income taxes	9,008
Prepaid expenses	15,733	9,454
Other current assets	10,677	9,320
Total current assets	337,506	341,864
Property and equipment, net	40,373	20,479
Software, net	133,603	22,598
Goodwill	505,787	214,144
Other intangible assets, net	125,552	18,343
Deferred income taxes, net	45,287	13,466
Other noncurrent assets	32,694	33,748
TOTAL ASSETS	1,220,802	664,642
Current liabilities
Accounts payable	27,470	11,532
Accrued employee compensation	37,808	27,955
Current portion of term credit facility	15,625
Deferred revenue	169,190	132,995
Income taxes payable		10,427
Alliance agreement liability	20,667	20,667
Accrued and other current liabilities	34,389	23,481
Total current liabilities	305,149	227,057
Noncurrent liabilities
Deferred revenue	44,156	32,721
Note payable under term credit facility	175,000
Note payable under revolving credit facility	194,000	75,000
Other noncurrent liabilities	25,264	12,534
Total liabilities	743,569	347,312
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, 2012 and December 31, 2011
Common stock, $0.005 par value; 70,000,000 shares authorized; 46,606,796 and 40,821,516 shares issued at September 30, 2012 and December 31, 2011, respectively	232	204
Common stock warrants		24,003
Treasury stock, at cost, 7,231,577 and 7,178,427 shares outstanding at September 30, 2012 and December 31, 2011, respectively	(188,545)	(163,411)
Additional paid-in capital	531,331	322,654
Retained earnings	150,323	151,141
Accumulated other comprehensive loss	(16,108)	(17,261)
Total stockholders' equity	477,233	317,330
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 1,220,802	$ 664,642