Quarterly report pursuant to Section 13 or 15(d)

Acquisitions - Purchase Price (Details)

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Acquisitions - Purchase Price (Details) - Thermon Heating Systems Inc.
$ in Thousands, $ in Thousands
9 Months Ended
Oct. 30, 2017
CAD ($)
Oct. 30, 2017
USD ($)
Dec. 31, 2018
USD ($)
Business Acquisition [Line Items]      
Consideration to or on behalf of sellers $ 262,415 $ 204,596 $ 204,596
Fair value of total consideration transferred     $ 204,596