ACQUISITIONS - Pro Forma Information (Details) - RideNow - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Pro forma revenue	$ 1,650,625	$ 1,348,211
Pro forma net income	$ 45,565	$ 18,854
Net income per share - basic (in dollars per share)	$ 6.58	$ 8.63
Weighted-average number of shares - basic (in shares)	6,920,318	2,184,441
Net income per share - diluted (in dollars per share)	$ 6.42	$ 5.75
Weighted-average number of shares - fully diluted (in shares)	7,099,041	3,279,699
Stock compensation and other administrative costs	$ 29,219	$ 3,175
Depreciation and amortization	13,199	13,607
Interest expense	40,347	47,312
Income tax provision (benefit)	$ (2,706)	$ 6,305