Business Segment and Entity Wide Disclosures - Segment (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Revenues			$ 1,601,762	$ 864,929	$ 598,302
Operating income (loss):
Operating profit (loss)			287,940	16,291	(309,635)
Capital expenditures			139,552	67,645	65,065
Depreciation and amortization			83,017	72,686	95,530
Identifiable assets		$ 1,129,013	1,129,013	864,365	790,505
Pension settlement loss	$ 22,500	2,900	2,921		4,660
Technical Services
Revenues:
Revenues			1,516,363	815,046	556,488
Operating income (loss):
Operating profit (loss)			281,622	24,434	(82,525)
Capital expenditures			126,327	59,316	54,327
Depreciation and amortization			73,016	62,667	80,877
Identifiable assets		823,434	823,434	580,406	499,764
Pension settlement loss					212,292
Support Services
Revenues:
Revenues			85,399	49,883	41,814
Operating income (loss):
Operating profit (loss)			18,095	(5,725)	(6,714)
Capital expenditures			12,320	7,012	10,224
Depreciation and amortization			9,840	9,752	14,377
Identifiable assets		80,104	80,104	69,345	64,457
Pension Settlement, Impairment and other charges
Operating income (loss):
Operating profit (loss)			(2,921)		(217,493)
Corporate
Operating income (loss):
Operating profit (loss)			(17,660)	(13,300)	(12,426)
Capital expenditures			905	1,317	514
Depreciation and amortization			161	267	276
Identifiable assets		$ 225,475	225,475	214,614	226,284
Gain on disposition of assets, net.
Operating income (loss):
Operating profit (loss)			$ 8,804	$ 10,882	$ 9,523