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Commitments and Contingencies (Tables)
6 Months Ended
Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]  
Minimum annual aggregate rentals under operating leases and service agreements
Remaining 2014
 
$
68,086

2015
 
124,713

2016
 
108,523

2017
 
95,041

2018
 
86,278

Thereafter
 
423,254

Total
 
$
905,895

Lease liability reserve roll forward [Table Text Block]
Balance at March 31, 2012
 
$
44,763

Accrued charges for vacated and subleased space
 
39,080

Payments, net
 
(15,341
)
Adjustments and other
 
(1,590
)
Balance at March 31, 2013
 
66,912

Accrued charges for vacated and subleased space
 
1,039

Payments, net
 
(10,605
)
Adjustments and other
 
(2,748
)
Balance at September 30, 2013
 
$
54,598