EARNINGS PER SHARE - Reconciliation of Shares Used to Calculate Basic and Diluted Earnings Per Share (Details) - shares	3 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Class A Common Stock
Class of Stock [Line Items]
Basic shares (in shares)	25,698,863	25,850,270
Assumed conversion of restricted shares (in shares)	753,244	437,017
Diluted shares (in shares)	26,452,107	26,287,287
Class B Common Stock
Class of Stock [Line Items]
Basic shares (in shares)	21,315,064	21,331,127
Diluted shares (in shares)	21,315,064	21,331,127