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Revenue - Disaggregated Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 189,773	$ 176,030	$ 374,215	$ 344,046
United States
Disaggregation of Revenue [Line Items]
Revenue	132,635	124,626	262,474	246,738
Other Americas
Disaggregation of Revenue [Line Items]
Revenue	24,403	23,686	43,762	41,339
Europe
Disaggregation of Revenue [Line Items]
Revenue	31,259	25,094	61,380	50,124
Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	1,476	2,624	6,599	5,845
Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	109,256	106,124	222,421	204,789
Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	22,340	19,018	44,458	37,620
Industrials
Disaggregation of Revenue [Line Items]
Revenue	18,294	17,737	33,493	33,650
Power Generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	9,033	8,156	14,885	16,126
Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	14,909	13,381	26,809	25,754
Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	8,633	6,746	15,219	12,507
Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	4,019	1,733	8,363	7,015
Other
Disaggregation of Revenue [Line Items]
Revenue	3,289	3,135	8,567	6,585
Operating segments | North America
Disaggregation of Revenue [Line Items]
Revenue	156,394	145,550	306,743	282,482
Operating segments | North America | United States
Disaggregation of Revenue [Line Items]
Revenue	130,870	122,972	260,328	243,572
Operating segments | North America | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	24,594	21,041	41,721	35,311
Operating segments | North America | Europe
Disaggregation of Revenue [Line Items]
Revenue	611	1,282	1,764	2,694
Operating segments | North America | Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	319	255	2,930	905
Operating segments | North America | Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	96,356	97,500	199,383	187,273
Operating segments | North America | Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	16,596	13,665	31,971	27,276
Operating segments | North America | Industrials
Disaggregation of Revenue [Line Items]
Revenue	11,853	11,066	20,762	20,368
Operating segments | North America | Power Generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	7,332	5,459	10,924	10,446
Operating segments | North America | Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	10,368	8,864	18,296	17,973
Operating segments | North America | Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	5,125	4,171	9,097	6,654
Operating segments | North America | Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	3,848	1,577	7,661	6,714
Operating segments | North America | Other
Disaggregation of Revenue [Line Items]
Revenue	4,916	3,248	8,649	5,778
Operating segments | International
Disaggregation of Revenue [Line Items]
Revenue	34,264	30,277	67,311	59,684
Operating segments | International | United States
Disaggregation of Revenue [Line Items]
Revenue	432	280	728	589
Operating segments | International | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	1,921	3,821	4,216	7,310
Operating segments | International | Europe
Disaggregation of Revenue [Line Items]
Revenue	31,183	24,474	59,846	48,657
Operating segments | International | Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	728	1,702	2,521	3,128
Operating segments | International | Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	12,735	8,609	22,801	17,464
Operating segments | International | Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	5,697	5,136	12,429	10,116
Operating segments | International | Industrials
Disaggregation of Revenue [Line Items]
Revenue	5,878	6,203	11,731	12,256
Operating segments | International | Power Generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	1,254	1,530	2,936	3,187
Operating segments | International | Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	4,504	4,466	8,437	7,703
Operating segments | International | Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	2,813	2,028	5,018	4,164
Operating segments | International | Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	171	156	702	301
Operating segments | International | Other
Disaggregation of Revenue [Line Items]
Revenue	1,212	2,149	3,257	4,493
Operating segments | Products
Disaggregation of Revenue [Line Items]
Revenue	3,373	3,329	6,583	7,068
Operating segments | Products | United States
Disaggregation of Revenue [Line Items]
Revenue	1,542	1,645	3,142	3,446
Operating segments | Products | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	675	298	852	624
Operating segments | Products | Europe
Disaggregation of Revenue [Line Items]
Revenue	580	504	1,231	765
Operating segments | Products | Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	576	882	1,358	2,233
Operating segments | Products | Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	165	15	237	52
Operating segments | Products | Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	47	217	58	228
Operating segments | Products | Industrials
Disaggregation of Revenue [Line Items]
Revenue	563	468	1,000	1,026
Operating segments | Products | Power Generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	447	1,167	1,025	2,493
Operating segments | Products | Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	37	51	76	78
Operating segments | Products | Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	695	547	1,104	1,689
Operating segments | Products | Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Operating segments | Products | Other
Disaggregation of Revenue [Line Items]
Revenue	1,419	864	3,083	1,502
Corp/Elim
Disaggregation of Revenue [Line Items]
Revenue	(4,258)	(3,126)	(6,422)	(5,188)
Corp/Elim | United States
Disaggregation of Revenue [Line Items]
Revenue	(209)	(271)	(1,724)	(869)
Corp/Elim | Other Americas
Disaggregation of Revenue [Line Items]
Revenue	(2,787)	(1,474)	(3,027)	(1,906)
Corp/Elim | Europe
Disaggregation of Revenue [Line Items]
Revenue	(1,115)	(1,166)	(1,461)	(1,992)
Corp/Elim | Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	(147)	(215)	(210)	(421)
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	$ (4,258)	$ (3,126)	$ (6,422)	$ (5,188)

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