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Guarantor/Non-Guarantor Financial Information (Unaudited) - Summary of Consolidated Statements of Cash Flows (Parenthetical) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Condensed Statement of Income Captions [Line Items] |  |  |
Asset retirement obligations | $ 5,210 | $ 133 |
Redflex Holdings Limited |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |
Asset retirement obligations | $ 3,900 | $ 3,900 | $ 3,900

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- Definition Amount of asset retirement obligations incurred during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Details
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