CUSTOMER ACCOUNTS - Time Deposits (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024
Time deposits by rate band are as follows:
Less than 1.00%	$ 45,200	$ 82,935
1.00% to 1.99%	24,526	2,395
2.00% to 2.99%	226,537	3,340
3.00% to 3.99%	7,310,525	345,680
4.00% to 4.99%	1,523,726	8,244,791
5.00% and higher	590	877,644
Time deposits by maturity band are as follows:
Three months or less	3,426,185	2,923,299
Over 3 through 6 months	2,367,760	3,140,278
Over 6 through 12 months	2,933,212	2,543,201
Over 12 months	403,947	950,007
Time deposits, total	$ 9,131,104	$ 9,556,785