Quarterly report pursuant to Section 13 or 15(d)

Related-Party Transactions (Details)

v2.4.0.6
Related-Party Transactions (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Mar. 31, 2012
Related Party Transaction [Line Items]          
Management fees including termination fee paid in connection with IPO       $ 8,120  
Obligations due to settle the CHS Transactions 3,325   3,325   3,528
Payments to Acquire Businesses, Net of Cash Acquired 67 137 203 663  
Thermon Holding Corp.
         
Related Party Transaction [Line Items]          
Management fees including termination fee paid in connection with IPO       8,120  
Obligations due to settle the CHS Transactions 3,325   3,325   3,528
Payments to Acquire Businesses, Net of Cash Acquired $ 67 $ 137 $ 203 $ 663