Financial Instruments Financial Instruments - Interest Rate Swap Agreements (Detail)	12 Months Ended						12 Months Ended
	Dec. 31, 2013 Interest Rate Swap [Member] USD ($)	Dec. 31, 2012 Interest Rate Swap [Member] USD ($)	Dec. 31, 2011 Interest Rate Swap [Member] USD ($)	Dec. 31, 2013 USD Interest Rate Swap [Member] USD ($) Contract	Dec. 31, 2014 Euro Interest Rate Swap [Member]	Dec. 31, 2013 Euro Interest Rate Swap [Member] EUR (€)	Dec. 31, 2013 Interest Rate Swap Contract One [Member]	Dec. 31, 2013 Interest Rate Swap Contract Two [Member]	Dec. 31, 2013 Interest Rate Swap Contract Three [Member]	Dec. 31, 2013 Accrued Liabilities [Member] Interest Rate Swap [Member] USD ($)	Dec. 31, 2012 Accrued Liabilities [Member] Interest Rate Swap [Member] USD ($)	Dec. 31, 2013 Other Liabilities [Member] Interest Rate Swap [Member] USD ($)	Dec. 31, 2012 Other Liabilities [Member] Interest Rate Swap [Member] USD ($)	Jan. 14, 2014 Subsequent Event [Member] Us Term Loan [Member] Interest Rate Swap [Member]	Jan. 14, 2014 Subsequent Event [Member] Euro Term Loan [Member] Interest Rate Swap [Member]
Derivative [Line Items]
Notional principal amount for each interest rate swap agreement	$ 294,900,000	$ 289,000,000		$ 50,000,000		€ 105,000,000
Interest rate swap agreement fixed interest rate						4.10%	0.75%	1.38%	1.64%
Agreement maturity year					2014
Number of interest rate swap agreements				3
Interest rate swap agreement beginning period									06/01/2014
Interest rate swap agreement maturity period							06/01/2015	06/01/2017	06/01/2017
Net payments under derivative swap agreements	5,900,000	4,600,000	4,700,000
Effective interest rate on term loans														1.96%	3.56%
Fair value of total outstanding swap agreements										$ 6,500,000	$ 5,600,000	$ 400,000	$ 7,700,000