Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v2.4.1.9
Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Dec. 31, 2014
Mar. 31, 2014
Common stock, par value (in dollars per share) $ 0.001us-gaap_CommonStockParOrStatedValuePerShare $ 0.001us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized 150,000,000us-gaap_CommonStockSharesAuthorized 150,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued 32,067,529us-gaap_CommonStockSharesIssued 31,920,865us-gaap_CommonStockSharesIssued
Common stock, shares outstanding 32,067,529us-gaap_CommonStockSharesOutstanding 31,920,865us-gaap_CommonStockSharesOutstanding
Preferred stock, par value (in dollars per share) $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare
Preferred stock, shares authorized 10,000,000us-gaap_PreferredStockSharesAuthorized 10,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued 0us-gaap_PreferredStockSharesIssued 0us-gaap_PreferredStockSharesIssued
Preferred stock, shares outstanding 0us-gaap_PreferredStockSharesOutstanding 0us-gaap_PreferredStockSharesOutstanding
Thermon Holding Corp.    
Accounts receivable, allowance for doubtful accounts (in dollars) $ 967us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
$ 751us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember