DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - OCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	$ (2,734)	$ (1,410)	$ 2,832
Reclassified from Accumulated OCI into Earnings
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	(1,630)	107
Foreign currency forward contracts
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	(418)	236
Foreign currency forward contracts | Reclassified from Accumulated OCI into Earnings
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	67	39
Commodity futures contracts
Effect of derivative instruments on earnings
Gain (Loss) Recognized in OCI	(2,316)	(1,646)
Commodity futures contracts | Reclassified from Accumulated OCI into Earnings
Effect of derivative instruments on earnings
Gain (Loss) Reclassified from Accumulated OCI into Earnings	$ (1,697)	$ 68