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Acquisitions - Narrative (Details) - Small NDT Services Company - Canada
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2021
USD ($)
Dec. 31, 2021
entity
Business Acquisition [Line Items]    
Number of acquisitions | entity   1
Percentage of equity interest acquired 100.00%  
Cash consideration paid | $ $ 0.4