RESTRUCTURING (Details) (USD $)	12 Months Ended
	Mar. 31, 2013
RESTRUCTURING
Total	$ 12,300,000
Expected accelerated depreciation
2014	10,000,000
2015	7,000,000
Athlone, Ireland manufacturing facility
RESTRUCTURING
Severance	12,100,000
Outplacement services	200,000
Total	12,300,000
Athlone, Ireland manufacturing facility | Minimum
RESTRUCTURING
Estimated cost savings	15,000,000
Athlone, Ireland manufacturing facility | Maximum
RESTRUCTURING
Expected number of employees to be eliminated	130
RESTRUCTURING
Estimated cost savings	$ 20,000,000