DERIVATIVE INSTRUMENTS (Details 2) (Foreign Exchange Contract [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Foreign Exchange Contract [Member]
Cash flow hedges:
Loss Recognized in AOCI, net of tax (in dollars)	$ (870)	$ (1,165)	$ (819)	$ (2,257)
Gain Reclassified from AOCI into Income (in dollars)	$ (38)	$ 594	$ 81	$ 1,298
Location of Gain Reclassified from AOCI into Income	Cost of services	Cost of services	Cost of services	Cost of services