Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current Assets:
Cash and cash equivalents	$ 362,430	$ 285,512
Restricted cash	3,314	8,733
Accounts receivable, net	126,368	114,778
Deferred tax assets—current portion	36,540	32,063
Prepaid expenses and other current assets	24,240	24,584
Total current assets	552,892	465,670
Non-Current Assets:
Restricted cash	662	652
Property and equipment, net	52,831	52,541
Goodwill	231,377	231,377
Other intangibles, net	119,417	141,882
Deferred tax assets—long-term portion	248,796	258,271
Other non-current assets	19,668	20,565
Total non-current assets	672,751	705,288
Total Assets	1,225,643	1,170,958
Current Liabilities:
Accounts payable	10,375	7,740
Accrued expenses and other liabilities	71,381	73,111
Deferred revenue—current portion	140,284	108,217
Total current liabilities	222,040	189,068
Non-Current Liabilities:
Long-term debt	273,484	273,210
Accrued exit and disposal obligations	3,130	3,926
Liability for uncertain tax positions	4,119	4,098
Deferred revenue—long-term portion	5,399	8,115
Other non-current liabilities	5,170	1,368
Total non-current liabilities	291,302	290,717
Total Liabilities	513,342	479,785
Stockholders’ Equity:
Common stock	450	449
Additional paid-in capital	577,935	571,593
Retained earnings	169,855	154,551
Accumulated other comprehensive income	(2,360)	(2,454)
Treasury stock	(33,579)	(32,966)
Total stockholders’ equity	712,301	691,173
Total liabilities and stockholders’ equity	$ 1,225,643	$ 1,170,958