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Commitments and Contingencies (Details) (USD $)
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9 Months Ended | 9 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2012
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Mar. 31, 2012
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Dec. 31, 2012
Asbestos Litigation
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Dec. 31, 2012
Indian Sales Tax and Customs Disputes
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Dec. 31, 2012
Notice of Tax Dispute with the Canada Revenue Agency
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Dec. 31, 2012
Thermon Holding Corp.
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Mar. 31, 2012
Thermon Holding Corp.
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Dec. 31, 2012
Thermon Holding Corp.
Asbestos Litigation
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Dec. 31, 2012
Thermon Holding Corp.
Indian Sales Tax and Customs Disputes
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Dec. 31, 2012
Thermon Holding Corp.
Notice of Tax Dispute with the Canada Revenue Agency
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| Commitments and Contingencies | ||||||||||
| Totaled arrangements under letter of credit guarantees and performance bonds securing performance obligations | $ 14,890,000 | $ 14,890,000 | ||||||||
| Guarantee obligations secured by cash deposits | 2,055,000 | 2,055,000 | ||||||||
| Guarantee obligations represented by a reduction of the available amount of the company's short term and long term revolving lines of credit | 12,835,000 | 12,835,000 | ||||||||
| Cash deposits pledged as collateral on performance bonds and letters of credit | 2,055,000 | 2,398,000 | 2,055,000 | 2,398,000 | ||||||
| Number of personal injury suits | 16 | 16 | ||||||||
| Number of pending cases | 2 | 2 | ||||||||
| Number of pending lawsuits defended by insurers | 1 | 1 | ||||||||
| Number of cost of defense settlements | 7 | 7 | ||||||||
| Estimated settlement consideration | 188,000 | 188,000 | ||||||||
| Disallowance of interest deductions | 11,640,000 | 11,640,000 | ||||||||
| Statutory tax rate in Canada (as a percent) | 25.00% | 25.00% | ||||||||
| Tax due that is requested by the Agency | $ 2,910,000 | $ 2,910,000 | ||||||||