EQUITY-BASED INCENTIVE AWARDS - Restricted Stock Units/Restricted Stock Awards Activity (Details)	12 Months Ended
	Sep. 30, 2023 $ / shares shares
Restricted Stock Units
Number of Shares
Nonvested restricted stock units/awards at the beginning of the period (in shares) | shares	18,519
Vested (in shares) | shares	(11,685)
Nonvested restricted stock units/awards at the end of the period (in shares) | shares	6,834
Weighted Average Fair Value
Nonvested restricted stock units/awards at the beginning of the period (in dollars per share) | $ / shares	$ 210.00
Vested (in dollars per share) | $ / shares	181.92
Nonvested restricted stock units/awards at the end of the period (in dollars per share) | $ / shares	$ 206.00
Restricted Stock Awards
Number of Shares
Nonvested restricted stock units/awards at the beginning of the period (in shares) | shares	15,100
Granted (in shares) | shares	15,100
Vested (in shares) | shares	(5,033)
Nonvested restricted stock units/awards at the end of the period (in shares) | shares	25,167
Weighted Average Fair Value
Nonvested restricted stock units/awards at the beginning of the period (in dollars per share) | $ / shares	$ 210.00
Granted (in dollars per share) | $ / shares	187.02
Vested (in dollars per share) | $ / shares	186.26
Nonvested restricted stock units/awards at the end of the period (in dollars per share) | $ / shares	$ 206.00