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Commitments (Notes)
12 Months Ended
Mar. 31, 2012
Leases, Operating [Abstract]  
Lease commitments
COMMITMENTS

The Company leases office space, transportation and other equipment under operating leases which expire at various dates through March 31, 2018.  The future minimum lease commitments under these operating leases at March 31, 2012 were as follows (amounts in thousands):
 

Year Ending March 31,
 
Amount
2013
 
$
9,293

2014
 
7,221

2015
 
4,594

2016
 
3,438

2017
 
3,238

Thereafter
 
2,693

Total minimum payments
 
$
30,477


 
Rental expense under operating leases totaled $15.1 million, $13.0 million and $10.7 million for fiscal years 2012, 2011 and 2010, respectively.

Commitments for construction or purchase of property, plant and equipment totaled $13.3 million as of March 31, 2012, all of which will be due within the next year. Other purchase obligations and commitments totaled approximately $21.4 million as of March 31, 2012. Other purchase obligations and commitments include payments due under various types of licenses and outstanding purchase commitments with the Company's wafer foundries of approximately $19.5 million for delivery in fiscal 2013.