Revenue - Disaggregated Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Disaggregation of Revenue [Line Items]
Revenue	$ 195,549	$ 182,694	$ 542,569	$ 556,909
United States
Disaggregation of Revenue [Line Items]
Revenue	134,972	124,797	383,726	387,270
Other Americas
Disaggregation of Revenue [Line Items]
Revenue	23,019	26,646	53,079	70,411
Europe
Disaggregation of Revenue [Line Items]
Revenue	34,972	28,996	99,347	90,376
Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	2,586	2,255	6,417	8,852
Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	105,669	99,503	305,049	321,924
Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	24,207	21,886	68,613	66,344
Industrials
Disaggregation of Revenue [Line Items]
Revenue	22,602	19,512	60,776	53,005
Power Generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	14,484	11,654	30,930	26,539
Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	8,774	11,815	30,076	38,624
Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	10,569	8,730	25,850	23,949
Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	3,709	4,004	9,455	12,367
Other
Disaggregation of Revenue [Line Items]
Revenue	5,535	5,590	11,820	14,157
Operating segments
Disaggregation of Revenue [Line Items]
Revenue	200,166	186,783	555,182	567,420
Operating segments \| North America
Disaggregation of Revenue [Line Items]
Revenue	160,609	149,845	437,503	456,588
Operating segments \| North America \| United States
Disaggregation of Revenue [Line Items]
Revenue	134,481	124,194	377,825	384,522
Operating segments \| North America \| Other Americas
Disaggregation of Revenue [Line Items]
Revenue	24,342	25,108	54,959	66,829
Operating segments \| North America \| Europe
Disaggregation of Revenue [Line Items]
Revenue	1,301	343	2,946	2,107
Operating segments \| North America \| Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	485	200	1,773	3,130
Operating segments \| North America \| Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	97,484	90,460	275,849	289,843
Operating segments \| North America \| Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	17,675	16,181	48,530	48,152
Operating segments \| North America \| Industrials
Disaggregation of Revenue [Line Items]
Revenue	15,469	12,285	38,804	33,047
Operating segments \| North America \| Power Generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	10,074	8,029	22,618	18,953
Operating segments \| North America \| Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	4,722	7,836	17,100	26,132
Operating segments \| North America \| Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	5,285	5,189	12,447	14,286
Operating segments \| North America \| Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	3,694	3,806	9,329	11,467
Operating segments \| North America \| Other
Disaggregation of Revenue [Line Items]
Revenue	6,206	6,059	12,826	14,708
Operating segments \| International
Disaggregation of Revenue [Line Items]
Revenue	35,521	33,662	107,812	100,972
Operating segments \| International \| United States
Disaggregation of Revenue [Line Items]
Revenue	549	402	4,797	1,129
Operating segments \| International \| Other Americas
Disaggregation of Revenue [Line Items]
Revenue	95	2,008	2,941	6,224
Operating segments \| International \| Europe
Disaggregation of Revenue [Line Items]
Revenue	34,571	29,458	98,485	89,304
Operating segments \| International \| Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	306	1,794	1,589	4,315
Operating segments \| International \| Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	8,125	9,040	28,714	31,841
Operating segments \| International \| Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	6,395	5,663	19,690	18,092
Operating segments \| International \| Industrials
Disaggregation of Revenue [Line Items]
Revenue	6,773	6,749	20,887	18,480
Operating segments \| International \| Power Generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	3,714	3,081	6,796	6,017
Operating segments \| International \| Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	4,014	3,900	12,930	12,337
Operating segments \| International \| Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	3,610	2,744	10,192	7,762
Operating segments \| International \| Petrochemical
Disaggregation of Revenue [Line Items]
Revenue	15	198	126	900
Operating segments \| International \| Other
Disaggregation of Revenue [Line Items]
Revenue	2,875	2,287	8,477	5,543
Operating segments \| Products & Systems
Disaggregation of Revenue [Line Items]
Revenue	4,036	3,276	9,867	9,860
Operating segments \| Products & Systems \| United States
Disaggregation of Revenue [Line Items]
Revenue	1,294	1,658	3,935	4,800
Operating segments \| Products & Systems \| Other Americas
Disaggregation of Revenue [Line Items]
Revenue	121	107	349	960
Operating segments \| Products & Systems \| Europe
Disaggregation of Revenue [Line Items]
Revenue	826	850	2,027	2,081
Operating segments \| Products & Systems \| Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	1,795	661	3,556	2,019
Operating segments \| Products & Systems \| Oil & Gas
Disaggregation of Revenue [Line Items]
Revenue	60	3	486	240
Operating segments \| Products & Systems \| Aerospace & Defense
Disaggregation of Revenue [Line Items]
Revenue	137	42	393	100
Operating segments \| Products & Systems \| Industrials
Disaggregation of Revenue [Line Items]
Revenue	360	478	1,085	1,478
Operating segments \| Products & Systems \| Power Generation & Transmission
Disaggregation of Revenue [Line Items]
Revenue	696	544	1,516	1,569
Operating segments \| Products & Systems \| Other Process Industries
Disaggregation of Revenue [Line Items]
Revenue	38	79	46	155
Operating segments \| Products & Systems \| Infrastructure, Research & Engineering
Disaggregation of Revenue [Line Items]
Revenue	1,674	797	3,211	1,901
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	1,071	1,333	3,130	4,417
Corp/Elim
Disaggregation of Revenue [Line Items]
Revenue	(4,617)	(4,089)	(12,613)	(10,511)
Corp/Elim \| United States
Disaggregation of Revenue [Line Items]
Revenue	(1,352)	(1,457)	(2,831)	(3,181)
Corp/Elim \| Other Americas
Disaggregation of Revenue [Line Items]
Revenue	(1,539)	(577)	(5,170)	(3,602)
Corp/Elim \| Europe
Disaggregation of Revenue [Line Items]
Revenue	(1,726)	(1,655)	(4,111)	(3,116)
Corp/Elim \| Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	0	(400)	(501)	(612)
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	$ (4,617)	$ (4,089)	$ (12,613)	$ (10,511)