Business Combinations - Hi-Rail Assets (Details) - USD ($) $ in Thousands			9 Months Ended
	Sep. 30, 2022	Jan. 14, 2022	Sep. 30, 2022	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Business Acquisition [Line Items]
Goodwill	$ 703,411		$ 703,411	$ 703,411		$ 695,865
Net cash paid			49,832		$ 1,337,686
Hi-Rail
Business Acquisition [Line Items]
Current assets	3,847	$ 2,891	3,847	3,847
Changes in current assets				956
Property, equipment and other assets	819	819	819	819
Changes in property, equipment and other assets				0
Rental equipment	34,224	34,224	34,224	34,224
Changes in rental equipment				0
Total identifiable assets acquired	38,890	37,934	38,890	38,890
Changes in total identifiable assets acquired				956
Total identifiable liabilities assumed	(7,325)	(6,011)	(7,325)	(7,325)
Changes in total identifiable liabilities assumed				(1,314)
Total net assets	31,565	31,923	31,565	31,565
Changes in total net assets				(358)
Goodwill	8,362	8,685	8,362	8,362
Changes in goodwill				(323)
Intangible assets	11,027	11,027	11,027	11,027
Changes in intangible assets				0
Net assets acquired (purchase price)	50,954	51,635	$ 50,954	50,954
Changes in net assets acquired (purchase price)				(681)
Less: cash acquired	(1,122)	(1,122)
Changes in less: cash acquired				0
Net cash paid	$ 49,832	$ 50,513
Changes in net cash paid				$ (681)