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Revenue - Disaggregated Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 182,694	$ 179,354	$ 556,909	$ 523,399
United States
Disaggregation of Revenue [Line Items]
Revenue	124,797	126,542	387,270	373,280
Other Americas
Disaggregation of Revenue [Line Items]
Revenue	26,646	24,000	70,411	65,339
Europe
Disaggregation of Revenue [Line Items]
Revenue	28,996	27,038	90,376	77,162
Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	2,255	1,774	8,852	7,618
Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	99,503	103,252	321,924	308,041
Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	21,886	20,065	66,344	57,685
Industrials
Disaggregation of Revenue [Line Items]
Revenue	19,512	16,653	53,005	50,303
Power Generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	11,654	9,737	26,539	25,863
Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	11,815	9,792	38,624	35,546
Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	8,730	9,495	23,949	22,002
Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	4,004	3,899	12,367	10,914
Other
Disaggregation of Revenue [Line Items]
Revenue	5,590	6,461	14,157	13,045
Operating segments | North America
Disaggregation of Revenue [Line Items]
Revenue	149,845	148,814	456,588	431,295
Operating segments | North America | United States
Disaggregation of Revenue [Line Items]
Revenue	124,194	126,239	384,522	369,811
Operating segments | North America | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	25,108	21,907	66,829	57,218
Operating segments | North America | Europe
Disaggregation of Revenue [Line Items]
Revenue	343	465	2,107	3,159
Operating segments | North America | Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	200	203	3,130	1,107
Operating segments | North America | Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	90,460	94,390	289,843	281,663
Operating segments | North America | Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	16,181	14,240	48,152	41,516
Operating segments | North America | Industrials
Disaggregation of Revenue [Line Items]
Revenue	12,285	10,325	33,047	30,693
Operating segments | North America | Power Generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	8,029	7,388	18,953	17,834
Operating segments | North America | Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	7,836	6,933	26,132	24,906
Operating segments | North America | Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	5,189	6,042	14,286	12,696
Operating segments | North America | Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	3,806	3,313	11,467	10,027
Operating segments | North America | Other
Disaggregation of Revenue [Line Items]
Revenue	6,059	6,183	14,708	11,960
Operating segments | International
Disaggregation of Revenue [Line Items]
Revenue	33,662	30,980	100,972	90,664
Operating segments | International | United States
Disaggregation of Revenue [Line Items]
Revenue	402	120	1,129	709
Operating segments | International | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	2,008	3,703	6,224	11,013
Operating segments | International | Europe
Disaggregation of Revenue [Line Items]
Revenue	29,458	26,764	89,304	75,421
Operating segments | International | Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	1,794	393	4,315	3,521
Operating segments | International | Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	9,040	8,827	31,841	26,291
Operating segments | International | Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	5,663	5,778	18,092	15,894
Operating segments | International | Industrials
Disaggregation of Revenue [Line Items]
Revenue	6,749	6,018	18,480	18,274
Operating segments | International | Power Generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	3,081	1,653	6,017	4,840
Operating segments | International | Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	3,900	2,864	12,337	10,567
Operating segments | International | Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	2,744	2,383	7,762	6,547
Operating segments | International | Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	198	586	900	887
Operating segments | International | Other
Disaggregation of Revenue [Line Items]
Revenue	2,287	2,871	5,543	7,364
Operating segments | Products
Disaggregation of Revenue [Line Items]
Revenue	3,276	2,829	9,860	9,897
Operating segments | Products | United States
Disaggregation of Revenue [Line Items]
Revenue	1,658	1,032	4,800	4,478
Operating segments | Products | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	107	49	960	673
Operating segments | Products | Europe
Disaggregation of Revenue [Line Items]
Revenue	850	510	2,081	1,275
Operating segments | Products | Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	661	1,238	2,019	3,471
Operating segments | Products | Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	3	35	240	87
Operating segments | Products | Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	42	47	100	275
Operating segments | Products | Industrials
Disaggregation of Revenue [Line Items]
Revenue	478	310	1,478	1,336
Operating segments | Products | Power Generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	544	696	1,569	3,189
Operating segments | Products | Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	79	(5)	155	73
Operating segments | Products | Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	797	1,070	1,901	2,759
Operating segments | Products | Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Operating segments | Products | Other
Disaggregation of Revenue [Line Items]
Revenue	1,333	676	4,417	2,178
Corp/Elim
Disaggregation of Revenue [Line Items]
Revenue	(4,089)	(3,269)	(10,511)	(8,457)
Corp/Elim | United States
Disaggregation of Revenue [Line Items]
Revenue	(1,457)	(849)	(3,181)	(1,718)
Corp/Elim | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	(577)	(1,659)	(3,602)	(3,565)
Corp/Elim | Europe
Disaggregation of Revenue [Line Items]
Revenue	(1,655)	(701)	(3,116)	(2,693)
Corp/Elim | Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	(400)	(60)	(612)	(481)
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	$ (4,089)	$ (3,269)	$ (10,511)	$ (8,457)

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