v3.25.1
Segment Information (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 31, 2025
USD ($)
Mar. 31, 2024
USD ($)
Mar. 31, 2025
USD ($)
segment
Mar. 31, 2024
USD ($)
Sep. 30, 2024
USD ($)
Segment Information [Abstract]          
Number of reportable segments | segment     2    
Revenue $ 483,521 $ 488,321 $ 859,335 $ 852,334  
Income (loss) from operations 16,271 13,855 14,298 20,326  
Depreciation and amortization 6,171 5,564 12,208 10,470  
Transaction costs 377 145 936 724  
Change in fair value of contingent consideration 66 3,132 308 3,704  
Restructuring and impairment 388 11,847 2,286 11,847  
Total assets 1,643,664 1,712,614 1,643,664 1,712,614 $ 1,589,989
Eliminations          
Segment Information [Abstract]          
Revenue (132) (69) (177) (129)  
Income (loss) from operations (25) (5) (37) (12)  
Depreciation and amortization 0 0 0 0  
Transaction costs 0 0 0 0  
Change in fair value of contingent consideration 0 0 0 0  
Restructuring and impairment 0 0 0 0  
Total assets (15) (3) (15) (3)  
Dealerships          
Segment Information [Abstract]          
Restructuring and impairment 400   1,200    
Dealerships | Operating Segments          
Segment Information [Abstract]          
Revenue 446,422 450,209 794,092 781,816  
Income (loss) from operations 17,767 14,944 20,788 21,887  
Depreciation and amortization 3,597 3,066 7,085 5,968  
Transaction costs 376 104 888 544  
Change in fair value of contingent consideration 66 3,132 308 3,704  
Restructuring and impairment 0 10,699 1,155 10,699  
Total assets 1,418,609 1,473,755 1,418,609 1,473,755  
Distribution          
Segment Information [Abstract]          
Restructuring and impairment     1,100    
Distribution | Operating Segments          
Segment Information [Abstract]          
Revenue 37,231 38,181 65,420 70,647  
Income (loss) from operations (1,471) (1,084) (6,453) (1,549)  
Depreciation and amortization 2,574 2,498 5,123 4,502  
Transaction costs 1 41 48 180  
Change in fair value of contingent consideration 0 0 0 0  
Restructuring and impairment 388 1,148 1,131 1,148  
Total assets $ 225,070 $ 238,862 $ 225,070 $ 238,862