Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2021	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Abstract]
Net sales	$ 291.2	$ 266.9	$ 277.6	$ 284.4	$ 562.0	$ 828.9	$ 1,095.5	$ 1,024.4
United States
Disaggregation of Revenue [Abstract]
Net sales	234.5			225.6
United States | Equipment sales
Disaggregation of Revenue [Abstract]
Net sales	140.8			141.0
United States | Parts and component sales
Disaggregation of Revenue [Abstract]
Net sales	77.2			69.6
United States | Service and equipment installation revenue
Disaggregation of Revenue [Abstract]
Net sales	6.9			5.9
United States | Used equipment sales
Disaggregation of Revenue [Abstract]
Net sales	1.7			2.9
United States | Freight revenue
Disaggregation of Revenue [Abstract]
Net sales	8.2			7.1
United States | Other
Disaggregation of Revenue [Abstract]
Net sales	(0.3)			(0.9)
International
Disaggregation of Revenue [Abstract]
Net sales	56.7			58.8
International | Equipment sales
Disaggregation of Revenue [Abstract]
Net sales	31.3			34.1
International | Parts and component sales
Disaggregation of Revenue [Abstract]
Net sales	22.0			20.8
International | Service and equipment installation revenue
Disaggregation of Revenue [Abstract]
Net sales	1.9			1.5
International | Used equipment sales
Disaggregation of Revenue [Abstract]
Net sales	0.7			0.9
International | Freight revenue
Disaggregation of Revenue [Abstract]
Net sales	0.8			1.1
International | Other
Disaggregation of Revenue [Abstract]
Net sales	0.0			0.4
Canada
Disaggregation of Revenue [Abstract]
Net sales	14.2			17.3
Australia
Disaggregation of Revenue [Abstract]
Net sales	10.2			8.8
Africa
Disaggregation of Revenue [Abstract]
Net sales	9.1			8.3
Europe
Disaggregation of Revenue [Abstract]
Net sales	5.4			10.5
South America
Disaggregation of Revenue [Abstract]
Net sales	5.2			4.5
Asia
Disaggregation of Revenue [Abstract]
Net sales	4.0			1.3
Brazil
Disaggregation of Revenue [Abstract]
Net sales	3.8			4.2
Central America
Disaggregation of Revenue [Abstract]
Net sales	2.6			1.2
Mexico
Disaggregation of Revenue [Abstract]
Net sales	0.7			2.4
Other
Disaggregation of Revenue [Abstract]
Net sales	1.5			0.3
Infrastructure Solutions
Disaggregation of Revenue [Abstract]
Net sales	197.5			201.5
Infrastructure Solutions | United States
Disaggregation of Revenue [Abstract]
Net sales	166.7			165.0
Infrastructure Solutions | United States | Equipment sales
Disaggregation of Revenue [Abstract]
Net sales	95.2			99.2
Infrastructure Solutions | United States | Parts and component sales
Disaggregation of Revenue [Abstract]
Net sales	56.4			51.9
Infrastructure Solutions | United States | Service and equipment installation revenue
Disaggregation of Revenue [Abstract]
Net sales	6.7			5.8
Infrastructure Solutions | United States | Used equipment sales
Disaggregation of Revenue [Abstract]
Net sales	1.7			2.9
Infrastructure Solutions | United States | Freight revenue
Disaggregation of Revenue [Abstract]
Net sales	6.6			5.6
Infrastructure Solutions | United States | Other
Disaggregation of Revenue [Abstract]
Net sales	0.1			(0.4)
Infrastructure Solutions | International
Disaggregation of Revenue [Abstract]
Net sales	30.8			36.5
Infrastructure Solutions | International | Equipment sales
Disaggregation of Revenue [Abstract]
Net sales	16.6			21.3
Infrastructure Solutions | International | Parts and component sales
Disaggregation of Revenue [Abstract]
Net sales	12.3			13.1
Infrastructure Solutions | International | Service and equipment installation revenue
Disaggregation of Revenue [Abstract]
Net sales	1.2			1.0
Infrastructure Solutions | International | Used equipment sales
Disaggregation of Revenue [Abstract]
Net sales	0.2			0.1
Infrastructure Solutions | International | Freight revenue
Disaggregation of Revenue [Abstract]
Net sales	0.5			0.8
Infrastructure Solutions | International | Other
Disaggregation of Revenue [Abstract]
Net sales	0.0			0.2
Materials Solutions
Disaggregation of Revenue [Abstract]
Net sales	93.7			82.9
Materials Solutions | United States
Disaggregation of Revenue [Abstract]
Net sales	67.8			60.6
Materials Solutions | United States | Equipment sales
Disaggregation of Revenue [Abstract]
Net sales	45.6			41.8
Materials Solutions | United States | Parts and component sales
Disaggregation of Revenue [Abstract]
Net sales	20.8			17.7
Materials Solutions | United States | Service and equipment installation revenue
Disaggregation of Revenue [Abstract]
Net sales	0.2			0.1
Materials Solutions | United States | Used equipment sales
Disaggregation of Revenue [Abstract]
Net sales	0.0			0.0
Materials Solutions | United States | Freight revenue
Disaggregation of Revenue [Abstract]
Net sales	1.6			1.5
Materials Solutions | United States | Other
Disaggregation of Revenue [Abstract]
Net sales	(0.4)			(0.5)
Materials Solutions | International
Disaggregation of Revenue [Abstract]
Net sales	25.9			22.3
Materials Solutions | International | Equipment sales
Disaggregation of Revenue [Abstract]
Net sales	14.7			12.8
Materials Solutions | International | Parts and component sales
Disaggregation of Revenue [Abstract]
Net sales	9.7			7.7
Materials Solutions | International | Service and equipment installation revenue
Disaggregation of Revenue [Abstract]
Net sales	0.7			0.5
Materials Solutions | International | Used equipment sales
Disaggregation of Revenue [Abstract]
Net sales	0.5			0.8
Materials Solutions | International | Freight revenue
Disaggregation of Revenue [Abstract]
Net sales	0.3			0.3
Materials Solutions | International | Other
Disaggregation of Revenue [Abstract]
Net sales	$ 0.0			$ 0.2