Accounts Receivable and Note Receivable (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2025	Jun. 30, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Feb. 20, 2025	Jan. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable	$ 278,488		$ 278,488	$ 277,181
Accounts Receivable, Allowance for Credit Loss, Writeoff	3,700
Accounts Receivable Greater than 12 Months Reserved	6,100		6,100
Accounts Receivable Securitization, Deferred Financing Cost	400		400	1,800
Receivable with Imputed Interest, Face Amount							$ 40,000
Note Receivable; Interest Rate; Stated percentage							2.50%
Accounts Receivable, Securitization, Incurred Feeds			8,900	9,500	$ 9,100
Accounts Receivable, Securitization, Deferred Financing Fees			300	500	600
Interest income			2,191	6,795	$ 6,809
Financing Receivable, Allowance for Credit Loss, Recovery			3,400
P N C Member
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable Securitization, Maximum Purchase Commitment	150,000		150,000			$ 160,000
Accounts Receivable from Securitization	47,500		47,500	$ 63,800
Greater than 12 months
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable	$ 8,200		$ 8,200
Harsco Industrial IKG | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Disposal Group, Including Discontinued Operation, Consideration							$ 85,000
Proceeds from Sale of Notes Receivable		$ 17,000
Interest income		$ 2,700