Schedule II - Consolidated Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for doubtful accounts
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 3,100	$ 3,199	$ 4,396
Charged/(Credited) to Expense	492	450	(166)
Other Adjustments	56	331	92
Deductions	(608)	(880)	(1,123)
Balance at End of Period	3,040	3,100	3,199
Deferred tax valuation allowance
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	1,361	1,432	145,470
Charged/(Credited) to Expense	(155)	(71)	(144,038)
Balance at End of Period	$ 1,206	$ 1,361	$ 1,432