Schedule II - Valuation and Qualifying Accounts (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		$ 84,963	$ 75,933
Charged to Costs and Expenses		1,570	9,030
Deductions		(86,533)
Balance at end of Period			84,963
Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		84,963	75,933
Charged to Costs and Expenses		1,570	9,030
Deductions		(86,533)
Balance at end of Period			$ 84,963