DERIVATIVE FINANCIAL INSTRUMENTS - Financial instruments measured at fair value on a recurring basis (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Level 1
Derivative financial instruments
Derivative financial assets
Derivative financial liability
Level 1 | Foreign currency contracts
Derivative financial instruments
Derivative financial assets
Derivative financial liability
Level 2
Derivative financial instruments
Derivative financial assets		291
Derivative financial liability		291
Level 2 | Foreign currency contracts
Derivative financial instruments
Derivative financial assets		291
Derivative financial liability		291
Level 3
Derivative financial instruments
Derivative financial assets
Derivative financial liability
Level 3 | Foreign currency contracts
Derivative financial instruments
Derivative financial assets
Derivative financial liability
Total
Derivative financial instruments
Derivative financial assets		291
Derivative financial liability		291
Total | Foreign currency contracts
Derivative financial instruments
Derivative financial assets		291
Derivative financial liability		$ 291