REVENUE (Tables)

9 Months Ended

Sep. 30, 2024

Revenue from Contract with Customer [Abstract]

Summary of Disaggregation of Revenue

A disaggregation of our revenue from customer contracts by geographic region, by reportable operating segment and by service type is presented below:

Geographic area (in thousands):

	Three Months Ended September 30, 2024						Three Months Ended September 30, 2023
	(unaudited)						(unaudited)
	United States and Canada		Other Countries		Total		United States and Canada		Other Countries		Total
Revenue:
IHT	$	104,478	$	3,126	$	107,604	$	100,800	$	3,057	$	103,857
MS	68,393		34,761		103,154		67,286		35,572		102,858
Total	$	172,871	$	37,887	$	210,758	$	168,086	$	38,629	$	206,715

	Nine Months Ended September 30, 2024						Nine Months Ended September 30, 2023
	(unaudited)						(unaudited)
	United States and Canada		Other Countries		Total		United States and Canada		Other Countries		Total
Revenue:
IHT	$	310,985	$	9,301	$	320,286	$	312,344	$	10,082	$	322,426
MS	216,490		102,200		318,690		221,943		104,115		326,058
Total	$	527,475	$	111,501	$	638,976	$	534,287	$	114,197	$	648,484

Revenue by Operating segment and service type (in thousands):

	Three Months Ended September 30, 2024
	(unaudited)
	Non-Destructive Evaluation and Testing Services		Repair and Maintenance Services		Heat Treating		Other		Total
Revenue:
IHT	$	83,461	$	2	$	18,036	$	6,105	$	107,604
MS	—		100,780		363		2,011		103,154
Total	$	83,461	$	100,782	$	18,399	$	8,116	$	210,758

	Three Months Ended September 30, 2023
	(unaudited)
	Non-Destructive Evaluation and Testing Services		Repair and Maintenance Services		Heat Treating		Other		Total
Revenue:
IHT	$	83,207	$	39	$	12,946	$	7,665	$	103,857
MS	—		101,624		55		1,179		102,858
Total	$	83,207	$	101,663	$	13,001	$	8,844	$	206,715

	Nine Months Ended September 30, 2024
	(unaudited)
	Non-Destructive Evaluation and Testing Services		Repair and Maintenance Services		Heat Treating		Other		Total
Revenue:
IHT	$	254,584	$	149	$	48,979	$	16,574	$	320,286
MS	—		312,516		718		5,456		318,690
Total	$	254,584	$	312,665	$	49,697	$	22,030	$	638,976

	Nine Months Ended September 30, 2023
	(unaudited)
	Non-Destructive Evaluation and Testing Services		Repair and Maintenance Services		Heat Treating		Other		Total
Revenue:
IHT	$	259,118	$	261	$	42,391	$	20,656	$	322,426
MS	—		323,484		544		2,030		326,058
Total	$	259,118	$	323,745	$	42,935	$	22,686	$	648,484