CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($)	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
INTEREST INCOME
Loans receivable	$ 114,835,000	$ 112,863,000
Mortgage-backed securities	12,789,000	16,987,000
Investment securities and cash equivalents	5,140,000	5,274,000
Interest Income	132,764,000	135,124,000
INTEREST EXPENSE
Customer accounts	13,017,000	12,717,000
FHLB advances	16,595,000	15,538,000
Interest Expense	29,612,000	28,255,000
Net interest income	103,152,000	106,869,000
Provision (release) for loan losses	0	0
Net interest income after provision (release) for loan losses	103,152,000	106,869,000
OTHER INCOME
Gain on sale of investment securities	968,000	0
Loan fee income	1,334,000	1,517,000
Deposit fee income	5,185,000	5,917,000
Other income	4,409,000	3,201,000
Other income, total	11,896,000	10,635,000
OTHER EXPENSE
Compensation and benefits	26,994,000	29,699,000
Occupancy	8,450,000	8,592,000
FDIC insurance premiums	2,839,000	2,589,000
Product delivery	3,361,000	5,523,000
Information technology	6,451,000	8,710,000
Other expense	6,246,000	9,396,000
Other expense, total	54,341,000	64,509,000
Gain on real estate owned, net	398,000	1,420,000
Income before income taxes	61,105,000	54,415,000
Income tax expense	19,859,000	19,317,000
NET INCOME	$ 41,246,000	$ 35,098,000
PER SHARE DATA
Basic earnings (in dollars per share)	$ 0.46	$ 0.38
Diluted earnings (in dollars per share)	0.46	0.38
Dividends paid on common stock (in dollars per share)	$ 0.14	$ 0.13
Basic weighted average number of shares outstanding (in shares)	89,310,958	92,986,358
Diluted weighted average number of shares outstanding, including dilutive stock options (in shares)	89,731,024	93,577,837