Accumulated Other Comprehensive Income (Loss) (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2013

Dec. 31, 2012

Accumulated Other Comprehensive Income (Loss)

Schedule of components of accumulated other comprehensive income (loss)

	Unrealized gain on forward exchange contracts, net of tax			Cumulative translation adjustment			Accumulated other comprehensive loss
Beginning balance December 31, 2012	$	3,283		$	(9,928	)	$	(6,645	)
Current period other comprehensive loss	(1,296		)	(943		)	(2,239		)
Ending balance March 31, 2013	$	1,987		$	(10,871	)	$	(8,884	)

	Unrealized gain on forward exchange contracts, net of tax			Cumulative translation adjustment			Accumulated other comprehensive income (loss)
Beginning balance December 31, 2011	$	(2,406	)	$	(10,026	)	$	(12,432	)
Current period other comprehensive income (loss)		5,689			98			5,787
Ending balance December 31, 2012	$	3,283		$	(9,928	)	$	(6,645	)

Summary of activity in other comprehensive income (loss) related to forward exchange contracts held

	Three Months Ended March 31,
	2013			2012
Change in fair value of forward exchange contracts, net of tax	$	(2,474	)	$	2,031
Amount reclassified to direct cost of revenue	1,178			631
Change in unrecognized gains/losses on forward exchange contracts	$	(1,296	)	$	2,662

	Year Ended December 31,
	2012		2011			2010
Change in fair value of forward exchange contracts, net of tax	$	3,149	$	(2,545	)	$	3,554
Adjustment for net gains/losses realized and included in net income		2,540		(5,219	)		1,891
Change in unrecognized gains/losses on forward exchange contracts	$	5,689	$	(7,764	)	$	5,445