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Inventories, Net (Tables)
9 Months Ended
Dec. 31, 2015
Inventory, Net [Abstract]  
Inventories, Net [Table Text Block]
Inventories, net, consist of:
(In thousands)
December 31, 2015
 
March 31, 2015
Hardgoods
$
318,432

 
$
311,453

Gases
166,798

 
162,617

 
$
485,230

 
$
474,070