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Revenue - Disaggregated Revenues by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue	$ 729,640	$ 705,473	$ 687,373
United States
Disaggregation of Revenue [Line Items]
Revenue	506,945	500,282	489,873
Other Americas
Disaggregation of Revenue [Line Items]
Revenue	90,013	86,939	89,254
Europe
Disaggregation of Revenue [Line Items]
Revenue	121,179	108,135	100,919
Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	11,503	10,117	7,327
Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	418,923	415,995	387,752
Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	87,016	76,997	80,552
Industrials
Disaggregation of Revenue [Line Items]
Revenue	71,665	70,583	63,983
Power Generation and Transmission
Disaggregation of Revenue [Line Items]
Revenue	36,518	33,974	42,104
Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	49,845	47,603	54,827
Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	33,161	29,108	27,223
Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	15,571	14,432	15,896
Other
Disaggregation of Revenue [Line Items]
Revenue	16,941	16,781	15,036
Operating segments
Disaggregation of Revenue [Line Items]
Revenue	743,157	716,730	698,488
Operating segments | North America
Disaggregation of Revenue [Line Items]
Revenue	593,527	579,330	573,336
Operating segments | North America | United States
Disaggregation of Revenue [Line Items]
Revenue	502,005	495,764	485,551
Operating segments | North America | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	85,139	77,880	83,877
Operating segments | North America | Europe
Disaggregation of Revenue [Line Items]
Revenue	2,590	3,655	2,811
Operating segments | North America | Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	3,793	2,031	1,097
Operating segments | North America | Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	376,333	379,221	356,763
Operating segments | North America | Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	63,111	56,000	61,475
Operating segments | North America | Industrials
Disaggregation of Revenue [Line Items]
Revenue	44,310	42,518	38,197
Operating segments | North America | Power Generation and Transmission
Disaggregation of Revenue [Line Items]
Revenue	27,035	23,598	31,197
Operating segments | North America | Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	32,353	33,035	40,778
Operating segments | North America | Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	19,155	16,620	15,283
Operating segments | North America | Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	14,437	13,216	15,360
Operating segments | North America | Other
Disaggregation of Revenue [Line Items]
Revenue	16,793	15,122	14,283
Operating segments | International
Disaggregation of Revenue [Line Items]
Revenue	135,969	124,414	112,425
Operating segments | International | United States
Disaggregation of Revenue [Line Items]
Revenue	1,607	934	910
Operating segments | International | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	9,144	12,906	9,076
Operating segments | International | Europe
Disaggregation of Revenue [Line Items]
Revenue	120,052	105,934	99,714
Operating segments | International | Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	5,166	4,640	2,725
Operating segments | International | Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	42,315	36,615	30,654
Operating segments | International | Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	23,785	20,711	18,763
Operating segments | International | Industrials
Disaggregation of Revenue [Line Items]
Revenue	25,498	26,292	23,703
Operating segments | International | Power Generation and Transmission
Disaggregation of Revenue [Line Items]
Revenue	7,629	6,609	8,304
Operating segments | International | Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	17,190	14,456	14,021
Operating segments | International | Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	10,606	9,320	7,946
Operating segments | International | Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	1,134	1,216	536
Operating segments | International | Other
Disaggregation of Revenue [Line Items]
Revenue	7,812	9,195	8,498
Operating segments | Products
Disaggregation of Revenue [Line Items]
Revenue	13,661	12,986	12,727
Operating segments | Products | United States
Disaggregation of Revenue [Line Items]
Revenue	5,868	5,956	6,495
Operating segments | Products | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	1,777	850	406
Operating segments | Products | Europe
Disaggregation of Revenue [Line Items]
Revenue	2,655	1,927	1,896
Operating segments | Products | Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	3,361	4,253	3,930
Operating segments | Products | Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	275	159	335
Operating segments | Products | Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	120	286	314
Operating segments | Products | Industrials
Disaggregation of Revenue [Line Items]
Revenue	1,857	1,773	2,083
Operating segments | Products | Power Generation and Transmission
Disaggregation of Revenue [Line Items]
Revenue	1,854	3,767	2,603
Operating segments | Products | Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	302	112	28
Operating segments | Products | Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	3,400	3,168	3,994
Operating segments | Products | Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Operating segments | Products | Other
Disaggregation of Revenue [Line Items]
Revenue	5,853	3,721	3,370
Corp/Elim
Disaggregation of Revenue [Line Items]
Revenue	(13,517)	(11,257)	(11,115)
Corp/Elim | United States
Disaggregation of Revenue [Line Items]
Revenue	(2,535)	(2,372)	(3,083)
Corp/Elim | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	(6,047)	(4,697)	(4,105)
Corp/Elim | Europe
Disaggregation of Revenue [Line Items]
Revenue	(4,118)	(3,381)	(3,502)
Corp/Elim | Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	(817)	(807)	(425)
Corp/Elim | Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Corp/Elim | Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Corp/Elim | Industrials
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Corp/Elim | Power Generation and Transmission
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Corp/Elim | Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Corp/Elim | Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Corp/Elim | Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Corp/Elim | Other
Disaggregation of Revenue [Line Items]
Revenue	$ (13,517)	$ (11,257)	$ (11,115)

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