Note D - Loans Receivable (excluding Covered Loans) Loans Receivable, Analysis of Age of Loans in Past Due Status (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loan, Net of Charge-Offs and LIP	$ 8,221,756
Current	7,920,550
30 Days	63,648
60 Days	71,625
90 Days	165,933
Total	301,206
Ratio of past due loans to total loans, net of charge-offs and LIPs	3.66%
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loan, Net of Charge-Offs and LIP	6,279,633
Current	6,063,988
30 Days	48,811
60 Days	37,563
90 Days	129,271
Total	215,645
Ratio of past due loans to total loans, net of charge-offs and LIPs	3.43%	3.09%
Construction, Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loan, Net of Charge-Offs and LIP	115,271
Current	101,797
30 Days	1,372
60 Days	1,546
90 Days	10,556
Total	13,474
Ratio of past due loans to total loans, net of charge-offs and LIPs	11.69%
Construction, Custom [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loan, Net of Charge-Offs and LIP	147,339
Current	146,704
30 Days	635
60 Days	0
90 Days	0
Total	635
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.43%
Land, Acquisition and Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loan, Net of Charge-Offs and LIP	221,967
Current	182,912
30 Days	7,756
60 Days	17,888
90 Days	13,411
Total	39,055
Ratio of past due loans to total loans, net of charge-offs and LIPs	17.59%
Land, Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loan, Net of Charge-Offs and LIP	169,714
Current	161,206
30 Days	1,538
60 Days	822
90 Days	6,148
Total	8,508
Ratio of past due loans to total loans, net of charge-offs and LIPs	5.01%
Multi Family Housing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loan, Net of Charge-Offs and LIP	715,875
Current	705,930
30 Days	292
60 Days	7,310
90 Days	2,343
Total	9,945
Ratio of past due loans to total loans, net of charge-offs and LIPs	1.39%
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loan, Net of Charge-Offs and LIP	302,142
Current	291,692
30 Days	1,546
60 Days	5,702
90 Days	3,202
Total	10,450
Ratio of past due loans to total loans, net of charge-offs and LIPs	3.46%
Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loan, Net of Charge-Offs and LIP	82,078
Current	81,784
30 Days	140
60 Days	26
90 Days	128
Total	294
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.36%
Home Equity Line of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loan, Net of Charge-Offs and LIP	114,676
Current	113,603
30 Days	216
60 Days	267
90 Days	590
Total	1,073
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.94%
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loan, Net of Charge-Offs and LIP	73,061
Current	70,934
30 Days	1,342
60 Days	501
90 Days	284
Total	$ 2,127
Ratio of past due loans to total loans, net of charge-offs and LIPs	2.91%

Note D - Loans Receivable (excluding Covered Loans) Loans Receivable, Analysis of Age of Loans in Past Due Status (Details) (USD $)
In Thousands, unless otherwise specified