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Accrued liabilities
12 Months Ended
Mar. 31, 2012
Accrued liabilities [Abstract]  
Accrued liabilities

14. Accrued liabilities

 

                     
    

March 31,

2012

       

March 31,

2011

 

Accrued interest payable

    $9,866           $9,866  

Payroll liabilities

    15,228           11,412  

Liabilities related to equipment leases

    4,238           7,518  

Income and other taxes payable

    7,463           4,018  
      $36,795           $32,814