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Fair Value Measurements - Summary of Changes in Fair Value of Company's Earn-Out Liability (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Earn-out payments during period | $ 3,494 | $ 3,946
Level 3 Inputs |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Beginning balance | 3,721 | 9,154
Earn-out payments during period | (3,632) | (4,238)
Changes in fair value during the period | 1,872 | (1,195)
Ending balance | 1,961 | 3,721
MUSA-Stainless | Level 3 Inputs |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Beginning balance | 375 | 2,403
Earn-out payments during period | (385) | (1,625)
Changes in fair value during the period | 10 | (403)
Ending balance | 0 | 375
MUSA-Galvanized | Level 3 Inputs |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Beginning balance | 941 | 1,782
Earn-out payments during period | (780) | (611)
Changes in fair value during the period | 945 | (230)
Ending balance | 1,106 | 941
American Stainless | Level 3 Inputs |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Beginning balance | 2,405 | 4,969
Earn-out payments during period | (2,467) | (2,002)
Changes in fair value during the period | 917 | (562)
Ending balance | $ 855 | $ 2,405

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- Definition Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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- Definition Amount of settlements of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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