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Business Combinations and Acquisitions - Summary of Company's Acquisition Activity (Details) - USD ($) $ in Millions | Aug. 01, 2022 | Dec. 01, 2021 | Nov. 01, 2021 | Sep. 01, 2021 | Dec. 18, 2020 | Dec. 01, 2020 | Sep. 01, 2020
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Critical Infrastructure |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Cash consideration paid by GSAH | $ 6.6 |  |  |  |  |  |
CIRS |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Equity interest, acquired percentage |  | 100.00% |  |  |  |  |
Asset acquisition, acquired percentage |  | 100.00% |  |  |  |  |
Equity interest, value |  | $ 55.1 |  |  |  |  |
Safeline |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Equity interest, acquired percentage |  | 100.00% |  |  |  |  |
Equity interest, value |  | $ 1.5 |  |  |  |  |
Business combination, consideration transferred |  | $ 0.5 |  |  |  |  |
CHP |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Asset acquisition, acquired percentage |  |  | 100.00% |  |  |  |
Asset acquisition, assets acquired |  |  | $ 2.5 |  |  |  |
Dosimetry Badge |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Asset acquisition, acquired percentage |  |  |  | 100.00% |  |  |
Asset acquisition, assets acquired |  |  |  | $ 1.8 |  |  |
Business acquisition, earn out |  |  |  | $ 0.8 |  |  |
Sun Nuclear |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Equity interest, acquired percentage |  |  |  |  | 100.00% |  |
Business acquisition, purchase consideration |  |  |  |  | $ 258.1 |  |
Dosimetrics |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Equity interest, acquired percentage |  |  |  |  |  | 100.00% |
Business acquisition, purchase consideration |  |  |  |  |  | $ 3.0 |
Biodex |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Equity interest, acquired percentage |  |  |  |  |  |  | 100.00%
Business acquisition, purchase consideration |  |  |  |  |  |  | $ 26.9

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