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Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue
Sales	$ 328.3	$ 273.2	$ 938.8	$ 864.7
Point in time
Disaggregation of Revenue
Sales	211.1	173.2	605.8	493.0
Over time
Disaggregation of Revenue
Sales	117.2	100.0	333.0	371.7
Operating Segments | Cryo Tank Solutions
Disaggregation of Revenue
Sales	112.2	102.0	313.9	305.3
Operating Segments | Cryo Tank Solutions | Point in time
Disaggregation of Revenue
Sales	98.1	99.3	286.6	280.7
Operating Segments | Cryo Tank Solutions | Over time
Disaggregation of Revenue
Sales	14.1	2.7	27.3	24.6
Operating Segments | Heat Transfer Systems
Disaggregation of Revenue
Sales	56.4	80.7	190.8	290.9
Operating Segments | Heat Transfer Systems | Point in time
Disaggregation of Revenue
Sales	4.6	6.6	15.4	21.8
Operating Segments | Heat Transfer Systems | Over time
Disaggregation of Revenue
Sales	51.8	74.1	175.4	269.1
Operating Segments | Specialty Products
Disaggregation of Revenue
Sales	116.9	56.0	301.0	157.5
Operating Segments | Specialty Products | Point in time
Disaggregation of Revenue
Sales	82.3	43.5	217.6	114.9
Operating Segments | Specialty Products | Over time
Disaggregation of Revenue
Sales	34.6	12.5	83.4	42.6
Operating Segments | Repair, Service & Leasing
Disaggregation of Revenue
Sales	46.3	36.5	142.3	117.3
Operating Segments | Repair, Service & Leasing | Point in time
Disaggregation of Revenue
Sales	29.2	25.7	93.7	79.6
Operating Segments | Repair, Service & Leasing | Over time
Disaggregation of Revenue
Sales	17.1	10.8	48.6	37.7
Intersegment Eliminations
Disaggregation of Revenue
Sales	(3.5)	(2.0)	(9.2)	(6.3)
Intersegment Eliminations | Point in time
Disaggregation of Revenue
Sales	(3.1)	(1.9)	(7.5)	(4.0)
Intersegment Eliminations | Over time
Disaggregation of Revenue
Sales	$ (0.4)	$ (0.1)	$ (1.7)	$ (2.3)

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