Other Income and Expense (Detail) (USD $) In Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
(Gain) loss on disposal of assets, net	$ (156)	$ (146)	$ (662)	$ 509
Interest income	(1)	(5)	(23)	(41)
Foreign exchange loss (gain)	1,161	30	(3,024)	(479)
Gain on sale of equity method investment	0	0	(4,783)	0
Other expense (income), net	630	(659)	422	(1,545)
Total	$ 1,634	$ (780)	$ (8,070)	$ (1,556)

Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]

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The aggregate foreign currency transaction gain (loss) (both realized and unrealized) included in determining net income for the reporting period. Excludes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements. For certain enterprises, primarily banks, that are dealers in foreign exchange, foreign currency transaction gains (losses) may be disclosed as dealer gains (losses).

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The gains (losses) included in results of operations resulting from the sale or disposal of other assets.

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Income derived from investments in debt securities and on cash and cash equivalents the earnings of which reflect the time value of money or transactions in which the payments are for the use or forbearance of money.

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