Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Mar. 31, 2012
Inventory Disclosure [Line Items]    
Raw materials $ 14,487 $ 11,721
Work in process 2,365 1,402
Finished goods 25,221 26,424
Inventories, gross 42,073 39,547
Valuation reserves (1,150) (1,094)
Inventories, net 40,923 38,453
Thermon Holding Corp.
   
Inventory Disclosure [Line Items]    
Raw materials 14,487 11,721
Work in process 2,365 1,402
Finished goods 25,221 26,424
Inventories, gross 42,073 39,547
Valuation reserves (1,150) (1,094)
Inventories, net $ 40,923 $ 38,453