ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Changes in accumulated other comprehensive income (loss)
Balance at the beginning of the period	$ (4,572)	$ 6,733
Other comprehensive loss before reclassifications	(988)	(11,439)
Balance at the end of the period	(5,560)	(4,706)
Foreign currency translation adjustments
Changes in accumulated other comprehensive income (loss)
Balance at the beginning of the period	(4,916)	6,674
Other comprehensive loss before reclassifications	(835)	(11,336)
Balance at the end of the period	(5,751)	(4,662)
Unrealized gain (loss) on derivative instruments
Changes in accumulated other comprehensive income (loss)
Balance at the beginning of the period	344	59
Other comprehensive loss before reclassifications	(153)	(103)
Balance at the end of the period	$ 191	$ (44)