Schedule II - Consolidated Valuation and Qualifying Accounts (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for doubtful accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 4,396	$ 3,926	$ 5,099
Charged/(Credited) to Expense	(166)	1,042	894
Other Adjustments	92	95	533
Deductions	(1,123)	(667)	(2,600)
Balance at End of Period	3,199	4,396	3,926
Deferred tax valuation allowance [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	145,470	148,364	142,561
Charged/(Credited) to Expense	(144,038)	(2,894)	5,803
Balance at End of Period	$ 1,432	$ 145,470	$ 148,364