General (Details 5) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Reclassifications from accumulated other comprehensive loss to the consolidated statement of operations
Cost of revenues	$ (33,385)	$ (32,980)
Sales and marketing	(17,997)	(14,673)
Research and development	(5,088)	(6,938)
General and administrative	(10,311)	(13,164)
Interest income and other, net	174	10
Income (loss) before income taxes	(1,257)	2,312
Tax amounts	129	(1,033)
Income (loss) from continuing operations	(1,128)	1,279
Amount Reclassified out of AOCL
Reclassifications from accumulated other comprehensive loss to the consolidated statement of operations
Income (loss) before income taxes	199
Tax amounts	(58)
Income (loss) from continuing operations	141
Amount Reclassified out of AOCL | Gains (losses) on cash flow hedges | Foreign currency derivatives
Reclassifications from accumulated other comprehensive loss to the consolidated statement of operations
Cost of revenues	22
Sales and marketing	14
Research and development	128
General and administrative	36
Interest income and other, net	$ (1)