Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 547,617	$ 206,405
Short-term investments	3,605	3,722
Accounts receivable, less allowance for doubtful accounts of approximately $2,754 and $2,415 as of June 30, 2011 and December 31, 2010, respectively	13,336	13,094
Deferred income taxes, net	7,519	5,203
Income tax receivable	852	4,940
Prepaid expenses and other current assets	5,693	5,809
Total current assets	578,622	239,173
Long-term investments	29,014	29,189
Deferred income taxes, net	12,502	0
Property and equipment, net	37,146	69,921
Goodwill	80,466	79,602
Intangibles and other assets, net	17,457	18,774
Deposits and other assets	2,649	2,989
Total assets	757,856	439,648
Current liabilities:
Accounts payable	4,127	3,123
Accrued wages and commissions	11,478	12,465
Accrued expenses	17,466	18,411
Deferred gain on the sale of building	2,523	0
Income taxes payable	7,156	0
Deferred revenue	17,466	16,895
Total current liabilities	60,216	50,894
Deferred gain on the sale of building	32,594	0
Deferred rent	17,374	4,032
Deferred income taxes, net	0	1,450
Income taxes payable	1,808	1,770
Total liabilities	111,992	58,146
Total stockholders' equity	645,864	381,502
Total liabilities and stockholders' equity	$ 757,856	$ 439,648