CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 223,443	$ 255,953
Accounts receivable, less allowance for doubtful accounts of approximately $3,857 and $3,397 as of March 31, 2014 and December 31, 2013, respectively	32,286	20,761
Deferred and other income taxes, net	37,362	22,506
Prepaid expenses and other current assets	8,113	6,597
Debt issuance costs, net	2,547	2,649
Total current assets	303,751	308,466
Long-term investments	22,168	21,990
Property and equipment, net	57,338	57,719
Goodwill	718,824	718,587
Intangibles and other assets, net	137,168	144,472
Deposits and other assets	1,818	1,855
Debt issuance costs, net	3,729	3,893
Total assets	1,244,796	1,256,982
Current liabilities:
Current portion of long-term debt	26,250	24,063
Accounts payable	3,943	4,939
Accrued wages and commissions	12,426	20,104
Accrued expenses	26,208	23,200
Deferred gain on the sale of building	2,523	2,523
Income taxes payable	0	2,362
Deferred revenue	35,926	34,362
Total current liabilities	107,276	111,553
Long-term debt, less current portion	122,500	129,062
Deferred gain on the sale of building	25,655	26,286
Deferred rent	23,353	22,828
Deferred income taxes, net	31,390	34,582
Income taxes payable	4,829	4,809
Total liabilities	315,003	329,120
Stockholders' equity:
Total stockholders’ equity	929,793	927,862
Total liabilities and stockholders’ equity	$ 1,244,796	$ 1,256,982