Thermon Group Holdings, Inc. Annual report pursuant to Section 13 and 15(d)

Income Taxes - Income Taxes in Consolidated Income Statement (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Current Provision [Abstract]
Federal provision (benefit)	$ 8,402us-gaap_CurrentFederalTaxExpenseBenefit	$ (1,594)us-gaap_CurrentFederalTaxExpenseBenefit	$ 3,835us-gaap_CurrentFederalTaxExpenseBenefit
Foreign provision	13,160us-gaap_CurrentForeignTaxExpenseBenefit	12,451us-gaap_CurrentForeignTaxExpenseBenefit	12,352us-gaap_CurrentForeignTaxExpenseBenefit
State provision	324	484	422
Deferred Provision [Abstract]
Federal deferred benefit	(5,063)	(2,515)	(376)
Foreign deferred benefit	(3,498)	(1,790)	(1,646)
State deferred benefit	(149)	(72)	(11)
Total provision for income taxes	$ 13,176us-gaap_IncomeTaxExpenseBenefit	$ 6,964us-gaap_IncomeTaxExpenseBenefit	$ 14,576us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.