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Property, Plant and Equipment (Tables)
 12 Months Ended
Mar. 31, 2014
Property, Plant and Equipment  
Schedule of components of property, plant and equipment

 

 
   As at March 31, 2014  
 
   Cost   Accumulated
Depreciation		   Net Book
Value		  

Cushion

   $ 421,404   $ —   $ 421,404  

Pipelines and measurement

     296,671     (92,687 )   203,984  

Wells

     126,694     (40,700 )   85,994  

Facilities

     272,645     (79,028 )   193,617  

Computer hardware and software

     4,225     (3,087 )   1,138  

Construction in progress, including projects under development

     1,063     —     1,063  

Office furniture, equipment and other

     2,473     (1,399 )   1,074  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

 

   $ 1,125,175   $ (216,901 ) $ 908,274  
               
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   As at March 31, 2013  
 
   Cost   Accumulated
Depreciation		   Net Book
Value		  

Cushion

   $ 406,141   $ —   $ 406,141  

Pipelines and measurement

     296,661     (81,950 )   214,711  

Wells

     126,519     (36,179 )   90,340  

Facilities

     267,508     (64,238 )   203,270  

Computer hardware and software

     4,095     (2,653 )   1,442  

Construction in progress, including projects under development

     928     —     928  

Office furniture, equipment and other

     2,473     (1,244 )   1,229  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

 

   $ 1,104,325   $ (186,264 ) $ 918,061  
               
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