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Restructuring (Tables)
6 Months Ended
Sep. 30, 2012
Restructuring and Related Activities [Abstract]  
Provision of Restructuring Charges and Liability Remaining
The following table shows the provision of the restructuring charges and the liability remaining as of September 30, 2012:
(in thousands)
Amount
Balance as of April 1, 2012
$
5,198

Provision
3,222

Cash payments
(6,696
)
Balance as of September 30, 2012
$
1,724