Revenue - Disaggregated Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Revenue	$ 185,405	$ 189,773	$ 347,020	$ 374,215
United States
Disaggregation of Revenue [Line Items]
Revenue	130,490	132,635	248,754	262,474
Other Americas
Disaggregation of Revenue [Line Items]
Revenue	16,942	24,403	30,060	43,762
Europe
Disaggregation of Revenue [Line Items]
Revenue	36,173	31,259	64,375	61,380
Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	1,800	1,476	3,831	6,599
Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	102,816	109,256	199,380	222,421
Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	24,002	22,340	44,406	44,458
Industrials
Disaggregation of Revenue [Line Items]
Revenue	19,604	18,294	38,174	33,493
Power Generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	11,793	9,033	16,446	14,885
Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	11,049	14,909	21,302	26,809
Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	8,060	8,633	15,281	15,219
Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	3,113	4,019	5,746	8,363
Other
Disaggregation of Revenue [Line Items]
Revenue	4,968	3,289	6,285	8,567
Operating segments
Disaggregation of Revenue [Line Items]
Revenue	189,809	194,031	355,016	380,637
Operating segments \| North America
Disaggregation of Revenue [Line Items]
Revenue	147,992	156,394	276,894	306,743
Operating segments \| North America \| United States
Disaggregation of Revenue [Line Items]
Revenue	129,011	130,870	243,344	260,328
Operating segments \| North America \| Other Americas
Disaggregation of Revenue [Line Items]
Revenue	17,202	24,594	30,617	41,721
Operating segments \| North America \| Europe
Disaggregation of Revenue [Line Items]
Revenue	979	611	1,645	1,764
Operating segments \| North America \| Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	800	319	1,288	2,930
Operating segments \| North America \| Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	92,634	96,356	178,365	199,383
Operating segments \| North America \| Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	16,848	16,596	30,855	31,971
Operating segments \| North America \| Industrials
Disaggregation of Revenue [Line Items]
Revenue	11,647	11,853	23,335	20,762
Operating segments \| North America \| Power Generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	9,320	7,332	12,544	10,924
Operating segments \| North America \| Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	5,877	10,368	12,378	18,296
Operating segments \| North America \| Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	3,461	5,125	7,162	9,097
Operating segments \| North America \| Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	3,112	3,848	5,635	7,661
Operating segments \| North America \| Other
Disaggregation of Revenue [Line Items]
Revenue	5,093	4,916	6,620	8,649
Operating segments \| International
Disaggregation of Revenue [Line Items]
Revenue	39,077	34,264	72,291	67,311
Operating segments \| International \| United States
Disaggregation of Revenue [Line Items]
Revenue	3,706	432	4,248	728
Operating segments \| International \| Other Americas
Disaggregation of Revenue [Line Items]
Revenue	15	1,921	2,846	4,216
Operating segments \| International \| Europe
Disaggregation of Revenue [Line Items]
Revenue	35,132	31,183	63,914	59,846
Operating segments \| International \| Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	224	728	1,283	2,521
Operating segments \| International \| Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	9,943	12,735	20,589	22,801
Operating segments \| International \| Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	7,014	5,697	13,295	12,429
Operating segments \| International \| Industrials
Disaggregation of Revenue [Line Items]
Revenue	7,597	5,878	14,114	11,731
Operating segments \| International \| Power Generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	2,097	1,254	3,082	2,936
Operating segments \| International \| Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	5,172	4,504	8,916	8,437
Operating segments \| International \| Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	4,020	2,813	6,582	5,018
Operating segments \| International \| Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	1	171	111	702
Operating segments \| International \| Other
Disaggregation of Revenue [Line Items]
Revenue	3,233	1,212	5,602	3,257
Operating segments \| Products & Systems
Disaggregation of Revenue [Line Items]
Revenue	2,740	3,373	5,831	6,583
Operating segments \| Products & Systems \| United States
Disaggregation of Revenue [Line Items]
Revenue	1,268	1,542	2,641	3,142
Operating segments \| Products & Systems \| Other Americas
Disaggregation of Revenue [Line Items]
Revenue	212	675	228	852
Operating segments \| Products & Systems \| Europe
Disaggregation of Revenue [Line Items]
Revenue	450	580	1,201	1,231
Operating segments \| Products & Systems \| Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	810	576	1,761	1,358
Operating segments \| Products & Systems \| Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	239	165	426	237
Operating segments \| Products & Systems \| Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	140	47	256	58
Operating segments \| Products & Systems \| Industrials
Disaggregation of Revenue [Line Items]
Revenue	360	563	725	1,000
Operating segments \| Products & Systems \| Power Generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	376	447	820	1,025
Operating segments \| Products & Systems \| Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	0	37	8	76
Operating segments \| Products & Systems \| Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	579	695	1,537	1,104
Operating segments \| Products & Systems \| Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Operating segments \| Products & Systems \| Other
Disaggregation of Revenue [Line Items]
Revenue	1,046	1,419	2,059	3,083
Corp/Elim
Disaggregation of Revenue [Line Items]
Revenue	(4,404)	(4,258)	(7,996)	(6,422)
Corp/Elim \| United States
Disaggregation of Revenue [Line Items]
Revenue	(3,495)	(209)	(1,479)	(1,724)
Corp/Elim \| Other Americas
Disaggregation of Revenue [Line Items]
Revenue	(487)	(2,787)	(3,631)	(3,027)
Corp/Elim \| Europe
Disaggregation of Revenue [Line Items]
Revenue	(388)	(1,115)	(2,385)	(1,461)
Corp/Elim \| Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	(34)	(147)	(501)	(210)
Corp/Elim \| Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Corp/Elim \| Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Corp/Elim \| Industrials
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Corp/Elim \| Power Generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Corp/Elim \| Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Corp/Elim \| Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Corp/Elim \| Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Corp/Elim \| Other
Disaggregation of Revenue [Line Items]
Revenue	$ (4,404)	$ (4,258)	$ (7,996)	$ (6,422)