XML 74 R14.htm IDEA: XBRL DOCUMENT v2.4.0.6
Inventories
12 Months Ended
Mar. 31, 2013
Inventory Disclosure [Abstract]  
Inventories
Inventories
 
 
March 31, 2013

 
March 31, 2012

Spare tires
 
$
5,751

 
$
6,620

Job materials
 

 
2,188

Manufacturing raw materials
 

 
1,669

Finished goods
 

 
1,378

 
 
$
5,751

 
$
11,855