Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net income	$ 348,061	$ 392,085	$ 241,415
Other comprehensive income (loss), net of tax:
Foreign currency translation	1,967	(4,316)	(82)
Reclassification of currency translation related to equity method accounting	0	(601)	0
Other comprehensive income (loss) attributable to Rush Enterprises, Inc.	1,967	(4,917)	(82)
Comprehensive income	350,028	387,168	241,333
Less: Comprehensive income attributable to noncontrolling interest	1,006	703	0
Comprehensive income attributable to Rush Enterprises, Inc.	$ 349,022	$ 386,465	$ 241,333