Fair Value Disclosures (Detail) - Assets And Liabilities Measured At Fair Value On Recurring Basis (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Assets:
Assets measured at fair value on a recurring basis	$ 30,994		$ 27,999
Liabilities:
Liabilities measured at fair value on a recurring basis	42,095		41,460
Foreign currency forward contracts
Assets:
Assets measured at fair value on a recurring basis	11	[1]	204	[1]
Liabilities:
Liabilities measured at fair value on a recurring basis	63	[1]	200	[1]
Interest rate swap contract
Liabilities:
Liabilities measured at fair value on a recurring basis	7,291	[2]	10,000	[2]
Deferred compensation plan assets
Assets:
Assets measured at fair value on a recurring basis	30,983	[3]	27,795	[3]
Deferred compensation plan liabilities
Liabilities:
Liabilities measured at fair value on a recurring basis	$ 34,741	[3]	$ 31,260	[3]

[1] The Company enters into foreign currency forward exchange contracts to hedge the effects of adverse fluctuations in foreign currency exchange rates. Valuation of the foreign currency forward contracts is based on observable foreign currency exchange rates in active markets, which the Company considers a Level 2 input.

[2] The Company has an interest rate swap contract which hedges the forecasted interest payments on its borrowings (see Note 7 — Debt). To determine the fair value of this over-the-counter financial instrument, the Company relies on a mark-to-market valuation prepared by a third-party broker. The valuation is based on observable interest rates from recently executed market transactions or broker quotes corroborated by other observable market data. Accordingly, the fair value of the swap is determined under a Level 2 input. The Company independently corroborates the reasonableness of the swap valuation prepared by the third-party broker through the use of an electronic quotation service.

[3] The Company has a deferred compensation plan for the benefit of certain highly compensated employees. The assets consist of investments in money market and mutual funds, and company-owned life insurance contracts, all of which are valued based on Level 1 or Level 2 valuation inputs. The related deferred compensation plan liabilities are recorded at fair value, or the estimated amount needed to settle the liability, which the Company also considers to be based on a Level 2 input.