Accrued Expenses (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Schedule of Accrued Liabilities [Line Items]
Accrued interest	$ 7,275	$ 7,205
Accrued compensation and benefits	50,305	55,030
Dividends Payable, Current	12,011	0
Other accrued expenses	37,876	36,174
Accrued expenses	$ 107,467	$ 98,409