Derivatives and Hedging (Detail) - Outstanding Derivatives Contracts (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Sep. 30, 2013 outstanding_contract		Dec. 31, 2012 outstanding_contract
Derivatives, Fair Value [Line Items]
Number of Outstanding Contracts	33		69
Notional Amounts	$ 215,000		$ 276,100
Fair Value Asset (Liability), Net	(7,343)	[1]	(9,996)	[1]
Unrealized Loss Recorded in OCI	(4,374)		(6,010)
Accrued Liabilities | Foreign currency forwards
Derivatives, Fair Value [Line Items]
Number of Outstanding Contracts	32	[2]
Notional Amounts	15,000	[2]
Fair Value Asset (Liability), Net	(52)	[1],[2]
Unrealized Loss Recorded in OCI	0	[2]
Current assets | Foreign currency forwards
Derivatives, Fair Value [Line Items]
Number of Outstanding Contracts			68	[3]
Notional Amounts			76,100	[2]
Fair Value Asset (Liability), Net			4	[1],[2]
Unrealized Loss Recorded in OCI			0	[2]
Designated as hedging instrument | Other liabilities | Interest rate swap
Derivatives, Fair Value [Line Items]
Number of Outstanding Contracts	1	[3]	1	[3]
Notional Amounts	200,000	[3]	200,000	[3]
Fair Value Asset (Liability), Net	(7,291)	[1],[3]	(10,000)	[1],[3]
Unrealized Loss Recorded in OCI	$ (4,374)	[3]	$ (6,010)	[3]

[1] See Note 11 — Fair Value Disclosures for the determination of the fair value of these instruments.

[2] The Company has foreign exchange transaction risk since it typically enters into transactions in the normal course of business that are denominated in foreign currencies that differ from the local functional currency. The Company enters into short-term foreign currency forward exchange contracts to offset the economic effects of these foreign currency transaction risks. These forward exchange contracts are accounted for at fair value with realized and unrealized gains and losses recognized in Other expense, net. outstanding contracts Substantially all of the contracts outstanding at September 30, 2013 matured by the end of October 2013.

[3] This swap has been designated, and is accounted for, as a cash flow hedge of the forecasted interest payments on borrowings (see Note 7 — Debt). As a result, changes in fair value of this swap are deferred and are recorded in OCI, net of tax effect.