Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2013	Dec. 31, 2012
Beginning balance	$ (6,645)	$ (12,432)
Current period other comprehensive income (loss)	(2,239)	5,787
Ending balance	(8,884)	(6,645)
Unrealized gain on forward exchange contracts, net of tax
Beginning balance	3,283	(2,406)
Current period other comprehensive income (loss)	(1,296)	5,689
Ending balance	1,987	3,283
Cumulative translation adjustment
Beginning balance	(9,928)	(10,026)
Current period other comprehensive income (loss)	(943)	98
Ending balance	$ (10,871)	$ (9,928)

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Publisher SEC

-Name Regulation S-X (SX)

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-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

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+ Details

- Definition

Net of tax amount of other comprehensive income (loss) attributable to the parent entity.

+ References

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+ Details