Selected Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Accrued Liabilities, Current	$ 307,446	$ 290,659
Equity Method Investments	30,049	30,502
Income Taxes Receivable	20,170
Inventory	184,375	153,682
Inventory [Line Items]
Inventory	184,375	153,682
Prepaid Expense, Current	56,170	61,984
Debt Securities, Available-for-sale, Current	6,369	6,416
Other Inventory, Net of Reserves	102,674	81,110
Other current assets	62,539	68,400
Intangible Assets, Net (Excluding Goodwill)	11,517	12,641
Cash surrender value of life insurance policies	33,012	41,922
Equity Method Investments	30,049	30,502
Other	27,476	19,190
Other Assets, Noncurrent	122,224	104,255
Payroll and related costs	122,380	134,538
Accrued job costs	57,310	49,032
Accrued Income Taxes, Current	$ 44,966	$ 35,826
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]
Interest Payable	$ 10,180	$ 9,937
Other	53,030	42,545
Accrued Liabilities, Current	307,446	290,659
Deferred Tax Liabilities, Gross, Noncurrent		1,375
Supplemental Executive Retirement Plan	29,635	35,195
Long-Term Incentive Plan	14,479	11,996
Liability for Uncertainty in Income Taxes, Noncurrent	10,869	14,830
Other	27,439	26,708
Liabilities, Other than Long-term Debt, Noncurrent	84,650	90,104
ROVs [Member]
Schedule of Equity Method Investments [Line Items]
Inventory	81,701	72,572
Inventory [Line Items]
Inventory	$ 81,701	$ 72,572