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EARNINGS PER SHARE - Discontinuing Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Basic net (loss) income per share:
Net (loss) income	$ (326)	$ 5,650	$ (540)	$ 11,401
Less: Net (loss) income attributable to non-controlling interest	(99)	2,063	(175)	3,831
Net (loss) income attributable to Class A common stockholders	$ (227)	$ 3,587	$ (365)	$ 7,570
Weighted average shares of Class A common stock outstanding - basic (in shares)	23,834,233	23,331,239	23,691,648	23,299,214
Basic net income per share (in USD per share)	$ (0.01)	$ 0.15	$ (0.02)	$ 0.32
Diluted net income per share:
Net income attributable to Class A common stockholders	$ (227)	$ 3,587	$ (365)	$ 7,570
Reallocation of net loss assuming conversion of common units		0		2,894
Net income attributable to Class A common stockholders - diluted		$ 3,587		$ 10,464
Weighted average shares of Class A common stock outstanding - basic (in shares)	23,834,233	23,331,239	23,691,648	23,299,214
Weighted average effect of dilutive securities (in shares)	299,505	387,235	389,584	427,506
Weighted average shares of Class A common stock outstanding - diluted (in shares)		23,718,474	24,081,232	23,726,720
Diluted (in USD per share)	$ (0.01)	$ 0.15	$ (0.02)	$ 0.31
Discontinued Operations
Basic net (loss) income per share:
Weighted average shares of Class A common stock outstanding - basic (in shares)		23,331,239		23,299,214
Diluted net income per share:
Weighted average shares of Class A common stock outstanding - basic (in shares)		23,331,239		23,299,214
Weighted average effect of dilutive securities (in shares)		387,235		10,520,010
Weighted average shares of Class A common stock outstanding - diluted (in shares)	23,834,233	23,718,474	23,691,648	33,819,224

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