BUSINESS COMBINATIONS - Consideration Paid (Details) - USD ($) $ in Thousands			9 Months Ended
	May 26, 2021	Apr. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Consideration Paid [Abstract]
Cash payments to common shareholders			$ 0	$ 32,991
Savoy Bank
Consideration Paid [Abstract]
Common stock issued (1,357,567 shares issued)	$ 31,252
Rollover Options	1,269
Cash payments to common shareholders	32,991
Total consideration paid	$ 65,512
Business Combination [Abstract]
Goodwill deductible for income tax purposes			$ 0
Savoy Bank | Common Stock
Consideration Paid [Abstract]
Total consideration paid		$ 65,500
Business Combination [Abstract]
Common stock issued as part of consideration (in shares)	1,357,567