Quarterly report pursuant to Section 13 or 15(d)

Additional Financial Statement Information - Other Balance Sheet information (Details)

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Additional Financial Statement Information - Other Balance Sheet information (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Other Receivables    
Insurance and Third Party Receivables for Remediation Expenses $ 4,342 $ 4,064
Reimbursable Research and Development Receivable   1,450
Property Insurance Receivable 2,337 4,000
Reimbursable Projects 6,753 3,253
Total Other Receivables 13,432 12,767
Prepaids and Deposits    
Prepaid Insurance 2,071 5,494
Other Prepaids and Deposits 3,318 2,870
Total Prepaids and Deposits 5,389 8,364
Accrued and Other Current Liabilities    
Accrued Operating Expense 19,675 33,491
Accrued Capital Costs 7,500 3,812
Accrued Interest 8,260 8,510
Accrued Compensation 6,066 10,118
Sales Tax Payable 2,949 1,645
Lease Liabilities $ 1,763 $ 1,676
Current Lease Liabilities, Classification Total Accrued and Other Current Liabilities Total Accrued and Other Current Liabilities
Contingent Consideration Liability $ 1,078 $ 1,221
Other 2,970 3,943
Total Accrued and Other Current Liabilities 50,261 64,416
Other Long-Term Liabilities    
Noncurrent Lease Liabilities $ 14,242 $ 14,716
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Total Other Long-Term Liabilities Total Other Long-Term Liabilities
Contingent Consideration Liability $ 1,829 $ 2,078
Total Other Long-Term Liabilities $ 16,071 $ 16,794