Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Foreign Exchange Contracts (Details)

v2.4.0.8
Fair Value Measurements - Foreign Exchange Contracts (Details) (Thermon Holding Corp., USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Mar. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Maximum term of forward contracts     30 days    
Net Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments $ 253 $ (8) $ 236 $ (61)  
Foreign Exchange Forward Contracts
         
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Foreign exchange contract forwards, assets 0   0   87
Foreign exchange contract forwards, liabilities 130   130   32
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net $ 372 $ (402) $ 206 $ 261