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Loans Receivable (excluding Covered Loans) (Loans Receivable, Analysis of Age of Loans in Past Due Status) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2012 | Sep. 30, 2011 | Mar. 31, 2011
--- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 7,897,759 | $ 8,128,845 |
Current | 7,646,511 | 7,849,623 |
30 Days | 54,011 | 59,026 |
60 Days | 44,908 | 25,577 |
90 Days | 152,329 | 194,619 |
Total | 251,248 | 279,222 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 3.18% | 3.43% |
Residential Portfolio Segment [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP |  | 6,217,670 |
Current |  | 6,015,464 |
30 Days |  | 54,140 |
60 Days |  | 21,985 |
90 Days |  | 126,082 |
Total |  | 202,207 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 3.10% | 3.25% | 3.33%
Construction, Speculative [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP |  | 115,409 |
Current |  | 106,843 |
30 Days |  | 330 |
60 Days |  | 0 |
90 Days |  | 8,236 |
Total |  | 8,566 |
Ratio of past due loans to total loans, net of charge-offs and LIPs |  | 7.42% |
Construction, Custom [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP |  | 147,764 |
Current |  | 147,129 |
30 Days |  | 0 |
60 Days |  | 0 |
90 Days |  | 635 |
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 |  | 193,613 |
Current |  | 159,357 |
30 Days |  | 679 |
60 Days |  | 0 |
90 Days |  | 33,577 |
Total |  | 34,256 |
Ratio of past due loans to total loans, net of charge-offs and LIPs |  | 17.69% |
Land, Consumer Lot Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP |  | 163,146 |
Current |  | 151,849 |
30 Days |  | 1,163 |
60 Days |  | 1,291 |
90 Days |  | 8,843 |
Total |  | 11,297 |
Ratio of past due loans to total loans, net of charge-offs and LIPs |  | 6.92% |
Multi Family Housing [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP |  | 699,340 |
Current |  | 690,765 |
30 Days |  | 0 |
60 Days |  | 1,202 |
90 Days |  | 7,373 |
Total |  | 8,575 |
Ratio of past due loans to total loans, net of charge-offs and LIPs |  | 1.23% |
Commercial Real Estate Portfolio Segment [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP |  | 300,307 |
Current |  | 292,015 |
30 Days |  | 1,016 |
60 Days |  | 0 |
90 Days |  | 7,276 |
Total |  | 8,292 |
Ratio of past due loans to total loans, net of charge-offs and LIPs |  | 2.76% |
Commercial and Industrial Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP |  | 108,995 |
Current |  | 106,708 |
30 Days |  | 55 |
60 Days |  | 553 |
90 Days |  | 1,679 |
Total |  | 2,287 |
Ratio of past due loans to total loans, net of charge-offs and LIPs |  | 2.10% |
Home Equity Line of Credit [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP |  | 115,092 |
Current |  | 114,059 |
30 Days |  | 452 |
60 Days |  | 100 |
90 Days |  | 481 |
Total |  | 1,033 |
Ratio of past due loans to total loans, net of charge-offs and LIPs |  | 0.90% |
Consumer Portfolio Segment [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP |  | 67,509 |
Current |  | 65,434 |
30 Days |  | 1,191 |
60 Days |  | 446 |
90 Days |  | 437 |
Total |  | 2,074 |
Ratio of past due loans to total loans, net of charge-offs and LIPs |  | 3.07% |
Non-Acquired Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 7,763,449 |  |
Current | 7,530,227 |  |
30 Days | 48,725 |  |
60 Days | 40,394 |  |
90 Days | 144,103 |  |
Total | 233,222 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 3.00% |  |
Non-Acquired Loans [Member] | Residential Portfolio Segment [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 5,969,973 |  |
Current | 5,784,832 |  |
30 Days | 45,826 |  |
60 Days | 28,841 |  |
90 Days | 110,474 |  |
Total | 185,141 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 3.10% |  |
Non-Acquired Loans [Member] | Construction, Speculative [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 102,654 |  |
Current | 97,455 |  |
30 Days | 0 |  |
60 Days | 1,635 |  |
90 Days | 3,564 |  |
Total | 5,199 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 5.06% |  |
Non-Acquired Loans [Member] | Construction, Custom [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 145,406 |  |
Current | 144,845 |  |
30 Days | 0 |  |
60 Days | 22 |  |
90 Days | 539 |  |
Total | 561 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.39% |  |
Non-Acquired Loans [Member] | Land, Acquisition and Development [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 146,228 |  |
Current | 125,100 |  |
30 Days | 0 |  |
60 Days | 5,452 |  |
90 Days | 15,676 |  |
Total | 21,128 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 14.45% |  |
Non-Acquired Loans [Member] | Land, Consumer Lot Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 149,966 |  |
Current | 142,155 |  |
30 Days | 966 |  |
60 Days | 1,204 |  |
90 Days | 5,641 |  |
Total | 7,811 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 5.21% |  |
Non-Acquired Loans [Member] | Multi Family Housing [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 677,730 |  |
Current | 672,517 |  |
30 Days | 0 |  |
60 Days | 683 |  |
90 Days | 4,530 |  |
Total | 5,213 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.77% |  |
Non-Acquired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 292,143 |  |
Current | 286,778 |  |
30 Days | 672 |  |
60 Days | 1,950 |  |
90 Days | 2,743 |  |
Total | 5,365 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 1.84% |  |
Non-Acquired Loans [Member] | Commercial and Industrial Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 94,901 |  |
Current | 94,895 |  |
30 Days | 5 |  |
60 Days | 0 |  |
90 Days | 1 |  |
Total | 6 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.01% |  |
Non-Acquired Loans [Member] | Home Equity Line of Credit [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 113,368 |  |
Current | 112,657 |  |
30 Days | 60 |  |
60 Days | 60 |  |
90 Days | 591 |  |
Total | 711 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.63% |  |
Non-Acquired Loans [Member] | Consumer Portfolio Segment [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 71,080 |  |
Current | 68,993 |  |
30 Days | 1,196 |  |
60 Days | 547 |  |
90 Days | 344 |  |
Total | 2,087 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 2.94% |  |
Acquired Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 134,310 |  |
Current | 116,284 |  |
30 Days | 5,286 |  |
60 Days | 4,514 |  |
90 Days | 8,226 |  |
Total | 18,026 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 13.42% |  |
Acquired Loans [Member] | Residential Portfolio Segment [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 2,093 |  |
Current | 1,755 |  |
30 Days | 338 |  |
60 Days | 0 |  |
90 Days | 0 |  |
Total | 338 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 16.15% |  |
Acquired Loans [Member] | Construction, Speculative [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 139 |  |
Current | 139 |  |
30 Days | 0 |  |
60 Days | 0 |  |
90 Days | 0 |  |
Total | 0 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.00% |  |
Acquired Loans [Member] | Construction, Custom [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 0 |  |
Current | 0 |  |
30 Days | 0 |  |
60 Days | 0 |  |
90 Days | 0 |  |
Total | 0 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.00% |  |
Acquired Loans [Member] | Land, Acquisition and Development [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 4,490 |  |
Current | 3,937 |  |
30 Days | 0 |  |
60 Days | 0 |  |
90 Days | 553 |  |
Total | 553 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 12.32% |  |
Acquired Loans [Member] | Land, Consumer Lot Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 0 |  |
Current | 0 |  |
30 Days | 0 |  |
60 Days | 0 |  |
90 Days | 0 |  |
Total | 0 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.00% |  |
Acquired Loans [Member] | Multi Family Housing [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 1,229 |  |
Current | 1,090 |  |
30 Days | 139 |  |
60 Days | 0 |  |
90 Days | 0 |  |
Total | 139 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 11.31% |  |
Acquired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 101,254 |  |
Current | 87,036 |  |
30 Days | 4,285 |  |
60 Days | 3,375 |  |
90 Days | 6,558 |  |
Total | 14,218 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 14.04% |  |
Acquired Loans [Member] | Commercial and Industrial Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 7,765 |  |
Current | 6,907 |  |
30 Days | 488 |  |
60 Days | 55 |  |
90 Days | 315 |  |
Total | 858 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 11.05% |  |
Acquired Loans [Member] | Home Equity Line of Credit [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 17,215 |  |
Current | 15,331 |  |
30 Days | 0 |  |
60 Days | 1,084 |  |
90 Days | 800 |  |
Total | 1,884 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 10.94% |  |
Acquired Loans [Member] | Consumer Portfolio Segment [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 125 |  |
Current | 89 |  |
30 Days | 36 |  |
60 Days | 0 |  |
90 Days | 0 |  |
Total | 36 |  |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 28.80% |  |

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