FINANCIAL INSTRUMENTS - Gain (Loss) by Hedging Relationship (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Effect of derivative instruments on statements of operations [Abstract]
Net gain reclassified from accumulated OCI into Interest income and other, net, net of tax	$ 200
Derivative designated as hedging instrument [Member]
Effect of derivative instruments on statements of operations [Abstract]
Net gain (loss) recognized in OCI, net of tax	(796)	[1]	(794)	[1]	826	[1]
Net gain reclassified from accumulated OCI into income, net of tax	800	[2]	1,226	[2]	0	[2]
Net gain reclassified from accumulated OCI into Interest income and other, net, net of tax	158	[3]	0	[3]	0	[3]
Net gain (loss) recognized in other income and expense	74	[4]	109	[4]	(103)	[4]
Derivative not designated as hedging instrument [Member]
Effect of derivative instruments on statements of operations [Abstract]
Net gain (loss) recognized in income	$ (122)	[5]	$ (539)	[5]	$ (1,720)	[5]

[1] Net change in the fair value of the effective portion classified in OCI

[2] Effective portion classified as Revenue

[3] Ineffective portion classified as Interest income and other, net

[4] Amount excluded from effectiveness testing classified as Interest and other, net

[5] Classified in Interest and other, net