EARNINGS PER SHARE EARNINGS PER SHARE (Details) - Basic and diluted EPS from continuing operations - shares	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Common shares outstanding (in shares)	56,130,000	46,806,000	45,675,000
Unallocated ESOP shares (in shares)	(2,058,187)	(2,259,308)	(2,477,000)
Non-vested restricted stock (in shares)	(3,556,000)	(3,420,000)	(2,522,000)
Impact of weighted average shares (in shares)	(7,928,000)	(193,000)	329,000
Weighted average shares outstanding - basic (in shares)	42,588,000	40,934,000	41,005,000
Incremental shares from stock based compensation (in shares)	2,427,000	1,954,000	1,417,000
Weighted average shares outstanding - diluted (in shares)	45,015,000	42,888,000	42,422,000