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Estimated Fair Values of Financial Instruments (Detail) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, Carrying Value	$ 81,862	$ 55,295
Forward contracts, Carrying Value	1,460	1,352
Debt, Fair Value	82,283	56,180
Forward contracts, Fair Value	$ 1,460	$ 1,352

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents notes payable as of the balance sheet date.

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