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Revenue - Disaggregated Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disaggregation of Revenue [Line Items]
Revenue	$ 161,615	$ 184,442
United States
Disaggregation of Revenue [Line Items]
Revenue	118,264	129,839
Other Americas
Disaggregation of Revenue [Line Items]
Revenue	13,118	19,361
Europe
Disaggregation of Revenue [Line Items]
Revenue	28,202	30,121
Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	2,031	5,121
Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	96,564	113,165
Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	20,404	22,118
Industrials
Disaggregation of Revenue [Line Items]
Revenue	18,570	15,199
Power generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	4,653	5,852
Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	10,253	11,900
Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	7,221	6,586
Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	2,633	4,344
Other
Disaggregation of Revenue [Line Items]
Revenue	1,317	5,278
Operating segments
Disaggregation of Revenue [Line Items]
Revenue	165,207	186,606
Operating segments | North America
Disaggregation of Revenue [Line Items]
Revenue	128,902	150,349
Operating segments | North America | United States
Disaggregation of Revenue [Line Items]
Revenue	114,333	129,458
Operating segments | North America | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	13,415	17,127
Operating segments | North America | Europe
Disaggregation of Revenue [Line Items]
Revenue	666	1,153
Operating segments | North America | Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	488	2,611
Operating segments | North America | Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	85,731	103,027
Operating segments | North America | Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	14,007	15,375
Operating segments | North America | Industrials
Disaggregation of Revenue [Line Items]
Revenue	11,688	8,909
Operating segments | North America | Power generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	3,224	3,592
Operating segments | North America | Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	6,501	7,928
Operating segments | North America | Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	3,701	3,972
Operating segments | North America | Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	2,523	3,813
Operating segments | North America | Other
Disaggregation of Revenue [Line Items]
Revenue	1,527	3,733
Operating segments | International
Disaggregation of Revenue [Line Items]
Revenue	33,214	33,047
Operating segments | International | United States
Disaggregation of Revenue [Line Items]
Revenue	542	296
Operating segments | International | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	2,831	2,295
Operating segments | International | Europe
Disaggregation of Revenue [Line Items]
Revenue	28,782	28,663
Operating segments | International | Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	1,059	1,793
Operating segments | International | Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	10,646	10,066
Operating segments | International | Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	6,281	6,732
Operating segments | International | Industrials
Disaggregation of Revenue [Line Items]
Revenue	6,517	5,853
Operating segments | International | Power generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	985	1,682
Operating segments | International | Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	3,744	3,933
Operating segments | International | Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	2,562	2,205
Operating segments | International | Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	110	531
Operating segments | International | Other
Disaggregation of Revenue [Line Items]
Revenue	2,369	2,045
Operating segments | Products & Systems
Disaggregation of Revenue [Line Items]
Revenue	3,091	3,210
Operating segments | Products & Systems | United States
Disaggregation of Revenue [Line Items]
Revenue	1,373	1,600
Operating segments | Products & Systems | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	16	177
Operating segments | Products & Systems | Europe
Disaggregation of Revenue [Line Items]
Revenue	751	651
Operating segments | Products & Systems | Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	951	782
Operating segments | Products & Systems | Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	187	72
Operating segments | Products & Systems | Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	116	11
Operating segments | Products & Systems | Industrials
Disaggregation of Revenue [Line Items]
Revenue	365	437
Operating segments | Products & Systems | Power generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	444	578
Operating segments | Products & Systems | Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	8	39
Operating segments | Products & Systems | Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	958	409
Operating segments | Products & Systems | Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	0	0
Operating segments | Products & Systems | Other
Disaggregation of Revenue [Line Items]
Revenue	1,013	1,664
Corp/Elim
Disaggregation of Revenue [Line Items]
Revenue	(3,592)	(2,164)
Corp/Elim | United States
Disaggregation of Revenue [Line Items]
Revenue	2,016	(1,515)
Corp/Elim | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	(3,144)	(238)
Corp/Elim | Europe
Disaggregation of Revenue [Line Items]
Revenue	(1,997)	(346)
Corp/Elim | Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	(467)	(65)
Corp/Elim | Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	0	0
Corp/Elim | Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	0	0
Corp/Elim | Industrials
Disaggregation of Revenue [Line Items]
Revenue	0	0
Corp/Elim | Power generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	0	0
Corp/Elim | Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	0	0
Corp/Elim | Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	0	0
Corp/Elim | Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	0	0
Corp/Elim | Other
Disaggregation of Revenue [Line Items]
Revenue	$ (3,592)	$ (2,164)

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