Segment Reporting (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2026 USD ($) segement	Mar. 31, 2025 USD ($)	Dec. 31, 2025 USD ($)
Segment Reporting Information [Line Items]
Revenues	$ 692,429	$ 674,523
Cost of services and products	565,159	539,512
Selling, general and administrative expense	69,482	61,539
Depreciation	23,000	21,000
Amortization of Intangible Assets	4,300	3,800
Depreciation, Depletion and Amortization	27,171	24,448
Segment, Expenditure, Addition to Long-Lived Assets	17,405	26,088
Income (Loss) from Operations	$ 57,788	73,472
Number of Reportable Segments | segement	5
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax	$ 54,829	69,378
Interest income	5,061	3,644
Interest Expense, Operating and Nonoperating	(9,105)	(9,075)
Equity in income (losses) of unconsolidated affiliates	277	362
Other income (expense), net	808	975
Assets	2,643,195	2,275,023	$ 2,667,254
Property, Plant and Equipment, Net	444,930	431,935	451,693
Goodwill	50,786	50,173	$ 51,023
Subsea Robotics Member
Segment Reporting Information [Line Items]
Revenues	214,273	205,976
Cost of services and products	144,333	133,562
Selling, general and administrative expense	14,432	12,782
Depreciation, Depletion and Amortization	13,718	11,736
Segment, Expenditure, Addition to Long-Lived Assets	8,523	18,916
Income (Loss) from Operations	55,508	59,632
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax	55,508	59,632
Assets	557,385	493,890
Property, Plant and Equipment, Net	209,683	208,303
Goodwill	23,893	23,557
Manufactured Products Member
Segment Reporting Information [Line Items]
Revenues	143,648	135,037
Cost of services and products	107,642	117,667
Selling, general and administrative expense	9,921	8,703
Depreciation, Depletion and Amortization	2,774	2,650
Segment, Expenditure, Addition to Long-Lived Assets	1,082	784
Income (Loss) from Operations	26,085	8,667
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax	26,085	8,667
Assets	382,475	345,894
Property, Plant and Equipment, Net	60,128	61,828
Goodwill	0	0
Integrity Managements & Digital Solutions Member
Segment Reporting Information [Line Items]
Revenues	67,884	71,418
Cost of services and products	61,187	60,888
Selling, general and administrative expense	7,695	7,068
Depreciation, Depletion and Amortization	1,942	1,730
Segment, Expenditure, Addition to Long-Lived Assets	2,241	1,451
Income (Loss) from Operations	(998)	3,462
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax	(998)	3,462
Assets	138,841	128,670
Property, Plant and Equipment, Net	14,417	16,005
Goodwill	16,439	16,162
Offshore Projects Group
Segment Reporting Information [Line Items]
Revenues	135,376	164,941
Cost of services and products	106,967	120,063
Selling, general and administrative expense	10,065	9,212
Depreciation, Depletion and Amortization	4,755	4,689
Segment, Expenditure, Addition to Long-Lived Assets	2,401	4,295
Income (Loss) from Operations	18,344	35,666
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax	18,344	35,666
Assets	487,980	502,808
Property, Plant and Equipment, Net	140,614	127,900
Goodwill	0	0
Aerospace and Defense Technologies Member
Segment Reporting Information [Line Items]
Revenues	131,248	97,151
Depreciation, Depletion and Amortization	1,006	833
Income (Loss) from Operations	8,111	10,665
Unallocated Expenses [Member]
Segment Reporting Information [Line Items]
Cost of services and products	30,151	27,839
Selling, general and administrative expense	19,111	16,781
Depreciation, Depletion and Amortization	2,976	2,810
Segment, Expenditure, Addition to Long-Lived Assets	1,811	42
Income (Loss) from Operations	(49,262)	(44,620)
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax	(52,221)	(48,714)
Advanced Technologies [Member]
Segment Reporting Information [Line Items]
Cost of services and products	114,879	79,493
Selling, general and administrative expense	8,258	6,993
Segment, Expenditure, Addition to Long-Lived Assets	1,347	600
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax	8,111	10,665
Assets	159,042	144,178
Property, Plant and Equipment, Net	8,744	6,805
Goodwill	10,454	10,454
Corporate Segment
Segment Reporting Information [Line Items]
Assets	917,472	659,583
Property, Plant and Equipment, Net	11,344	11,094
Goodwill	$ 0	$ 0