Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Accounting Policy Information (Details)

v2.4.0.8
Basis of Presentation and Accounting Policy Information (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 3 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2012
Scenario, Previously Reported
Jun. 30, 2013
Restatement Adjustment
Jun. 30, 2012
Restatement Adjustment
Apr. 30, 2010
Thermon Holding Corp.
Jun. 30, 2012
Thermon Holding Corp.
Scenario, Previously Reported
Apr. 30, 2010
Thermon Holding Corp.
Group of investors and other private equity firms
Apr. 30, 2010
Thermon Holding Corp.
Group of investors and other private equity firms
Predecessor
Business Acquisition [Line Items]                  
Sales $ 65,600 $ 67,690 $ 67,213   $ 477        
Number of other private equity firms               2  
Purchase price to acquire the controlling interest           210,000     321,500
Cost of selling controlling interest           129,252      
Net cash used in operating activities (6,161) (357) (1,600) (1,243) 1,243        
Net Cash Provided by (Used in) Financing Activities   (5,706) (6,949) 1,000 1,243        
Cost of Goods Sold   34,351 33,874            
Gross Profit $ 31,014 $ 33,339 $ 33,339            
Gross profit as a percentage of revenue   49.30%         49.60%