Accrued Expenses (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Deferred revenue and customer deposits, net of long-term deferred revenue of $30,272 and $4,463	$ 92,153	$ 78,173
Accrued wages	73,083	54,259
Interest payable	54,549	47,724
Accrued phone	43,347	27,500
Accrued other taxes (non-income related)	39,119	37,980
Accrued employee benefit costs	13,737	12,763
Accrued settlements	12,750	1,250
Accrued lease expense	9,085	7,211
Interest rate hedge position	4,020	5,194
Income taxes payable	934	17,997
Other current liabilities	34,235	33,385
Total	$ 377,012	$ 323,436