Derivative Instruments and Hedging Activities (Details Textual) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Mar. 31, 2011
Foreign exchange derivative instruments [Member]
Derivative Instruments and Hedging Activities (Textual) [Abstract]
Debt instrument outstanding	$ 0	$ 0
Senior Notes [Member] | Interest rate swaps [Member]
Derivative Instruments and Hedging Activities (Textual) [Abstract]
Debt instrument outstanding	30.0	30.0
Interest Rate	5.60%	5.60%
Borrowings [Member] | Interest rate swaps [Member]
Derivative Instruments and Hedging Activities (Textual) [Abstract]
Debt instrument outstanding	$ 33.0	$ 33.0
Interest Rate	3.30%	3.30%