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Commitments and Contingencies (Tables)
6 Months Ended
Sep. 30, 2011
Commitments and Contingencies Disclosure [Abstract] 
Minimum annual aggregate rentals under operating leases and service agreements
Remaining 2012
 
$
79,933

2013
 
138,880

2014
 
111,952

2015
 
99,243

2016
 
89,945

Thereafter
 
522,464

Total
 
$
1,042,417