Segments - Schedule of Results of Operations by Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Total revenue	$ 192.1	$ 135.9	$ 372.6	$ 238.2
Interest expense	5.7	5.0	11.6	9.5
Depreciation and amortization	16.7	11.4	30.6	20.5
Net income (loss)	(4.1)	0.4	(21.1)	(2.2)
New and Used Equipment Sales
Segment Reporting Information [Line Items]
Total revenue	95.1	61.2	177.3	106.0
Parts Sales
Segment Reporting Information [Line Items]
Total revenue	28.1	20.6	56.8	37.1
Service Revenue
Segment Reporting Information [Line Items]
Total revenue	28.4	22.7	58.6	39.9
Rental Revenue
Segment Reporting Information [Line Items]
Total revenue	26.0	22.1	51.2	39.1
Rental Equipment Sales
Segment Reporting Information [Line Items]
Total revenue	14.5	9.3	28.7	16.1
Operating Segments | Industrial Equipment
Segment Reporting Information [Line Items]
Total revenue	95.1	74.9	189.7	123.1
Interest expense	1.4	1.1	2.9	2.0
Depreciation and amortization	5.4	4.0	10.6	6.7
Net income (loss)	3.6	2.4	5.1	3.1
Operating Segments | Construction Equipment
Segment Reporting Information [Line Items]
Total revenue	97.0	61.0	182.9	115.1
Interest expense	2.7	1.9	5.1	3.9
Depreciation and amortization	11.3	7.4	20.0	13.8
Net income (loss)	(3.8)	0.4	(6.2)	(0.9)
Operating Segments | New and Used Equipment Sales | Industrial Equipment
Segment Reporting Information [Line Items]
Total revenue	51.7	35.3	94.0	56.8
Operating Segments | New and Used Equipment Sales | Construction Equipment
Segment Reporting Information [Line Items]
Total revenue	43.4	25.9	83.3	49.2
Operating Segments | Parts Sales | Industrial Equipment
Segment Reporting Information [Line Items]
Total revenue	12.0	12.4	27.0	21.4
Operating Segments | Parts Sales | Construction Equipment
Segment Reporting Information [Line Items]
Total revenue	16.1	8.2	29.8	15.7
Operating Segments | Service Revenue | Industrial Equipment
Segment Reporting Information [Line Items]
Total revenue	17.8	16.4	38.4	28.2
Operating Segments | Service Revenue | Construction Equipment
Segment Reporting Information [Line Items]
Total revenue	10.6	6.3	20.2	11.7
Operating Segments | Rental Revenue | Industrial Equipment
Segment Reporting Information [Line Items]
Total revenue	10.5	9.0	22.0	14.9
Operating Segments | Rental Revenue | Construction Equipment
Segment Reporting Information [Line Items]
Total revenue	15.5	13.1	29.2	24.2
Operating Segments | Rental Equipment Sales | Industrial Equipment
Segment Reporting Information [Line Items]
Total revenue	3.1	1.8	8.3	1.8
Operating Segments | Rental Equipment Sales | Construction Equipment
Segment Reporting Information [Line Items]
Total revenue	11.4	7.5	20.4	14.3
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Interest expense	1.6	2.0	3.6	3.6
Net income (loss)	$ (3.9)	$ (2.4)	$ (20.0)	$ (4.4)