Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v2.4.0.6
Document and Entity Information (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Mar. 31, 2013
Jun. 04, 2013
Sep. 30, 2012
Entity Listings [Line Items]      
Entity Registrant Name Thermon Group Holdings, Inc.    
Entity Central Index Key 0001489096    
Current Fiscal Year End Date --03-31    
Entity Filer Category Non-accelerated Filer    
Document Type 10-K    
Document Period End Date Mar. 31, 2013    
Document Fiscal Year Focus 2013    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Common Stock, Shares Outstanding   31,358,176  
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 684,651,380