2.4.0.82111100 - Disclosure - Stock-Based Compensation Expensetruefalsefalse1false falsefalseD2014Q1YTDhttp://www.sec.gov/CIK0001489096duration2013-04-01T00:00:002013-06-30T00:00:001true 1us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Disclosure of Compensation Related Costs, Share-based Payments [Abstract]2false 2us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;font-size:10pt;">Stock-Based Compensation Expense</div><div style="line-height:120%;padding-top:12px;text-indent:48px;font-size:10pt;">Since the completion of the CHS Transactions on April 30, 2010, the board of directors has adopted and the shareholders have approved two stock option award plans.  The 2010 Thermon Group Holdings, Inc. Restricted Stock and Stock Option Plan (“2010 Plan”) was approved on July 28, 2010.  The 2010 Plan authorized the issuance of 2,767,171 stock options or restricted shares (on a post stock split basis).  On April 8, 2011, the board of directors approved the Thermon Group Holdings, Inc. 2011 Long-Term Incentive Plan (“2011 LTIP”). The 2011 LTIP made available 2,893,341 shares of the Company’s common stock that may be awarded to employees, directors or non-employee contractor's compensation in the form of stock options or restricted stock awards. </div><div style="line-height:120%;padding-top:12px;text-indent:48px;font-size:10pt;">At June 30, 2013, there were 1,046,700 options outstanding.  Stock compensation expense was $366 and $58 during the three months ended June 30, 2013 and 2012, respectively.  </div><div style="line-height:120%;padding-top:12px;text-indent:48px;font-size:10pt;"> During the three months ended June 30, 2013, 6,000 restricted stock units were issued to our employees with a total fair value of $126. The fair value was determined based on the closing price of our stock on the date of issuance which ranged from $20.70 to $22.02. The restricted stock units will be expensed on a straight-line basis over a five year period and will vest on each anniversary of the issuance date over the same period.</div></div>falsefalsefalsenonnum:textBlockItemTypenaThe entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64, 65, A240 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 93-6 -Paragraph 53 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false0Stock-Based Compensation ExpensefalseStock-Based Compensation ExpenseUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.thermon.com/role/StockBasedCompensationExpense12