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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 | Dec. 31, 2011 | Sep. 30, 2011 | Dec. 31, 2010
--- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | $ 8,048,906 | $ 8,128,845 |
Current | 7,796,790 | 7,849,623 |
30 Days | 56,826 | 59,026 |
60 Days | 26,934 | 25,577 |
90 Days | 168,356 | 194,619 |
Total | 252,116 | 279,222 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 3.13% | 3.43% |
Residential Portfolio Segment [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 6,080,964 | 6,217,670 |
Current | 5,888,376 | 6,015,464 |
30 Days | 49,092 | 54,140 |
60 Days | 22,689 | 21,985 |
90 Days | 120,807 | 126,082 |
Total | 192,588 | 202,207 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 3.17% | 3.25% | 3.33%
Construction, Speculative [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 104,654 | 115,409 |
Current | 98,502 | 106,843 |
30 Days | 2,161 | 330 |
60 Days | 210 | 0 |
90 Days | 3,781 | 8,236 |
Total | 6,152 | 8,566 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 5.88% | 7.42% |
Construction, Custom [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 160,717 | 147,764 |
Current | 159,557 | 147,129 |
30 Days | 525 | 0 |
60 Days | 0 | 0 |
90 Days | 635 | 635 |
Total | 1,160 | 635 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.72% | 0.43% |
Land, Acquisition and Development [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 169,752 | 193,613 |
Current | 143,179 | 159,357 |
30 Days | 141 | 679 |
60 Days | 450 | 0 |
90 Days | 25,982 | 33,577 |
Total | 26,573 | 34,256 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 15.65% | 17.69% |
Land, Consumer Lot Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 154,874 | 163,146 |
Current | 145,606 | 151,849 |
30 Days | 1,229 | 1,163 |
60 Days | 1,188 | 1,291 |
90 Days | 6,851 | 8,843 |
Total | 9,268 | 11,297 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 5.98% | 6.92% |
Multi Family Housing [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 675,772 | 699,340 |
Current | 667,102 | 690,765 |
30 Days | 471 | 0 |
60 Days | 1,461 | 1,202 |
90 Days | 6,738 | 7,373 |
Total | 8,670 | 8,575 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 1.28% | 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 | 413,343 | 300,307 |
Current | 408,760 | 292,015 |
30 Days | 2,073 | 1,016 |
60 Days | 0 | 0 |
90 Days | 2,510 | 7,276 |
Total | 4,583 | 8,292 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 1.11% | 2.76% |
Commercial and Industrial Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 93,498 | 108,995 |
Current | 93,448 | 106,708 |
30 Days | 42 | 55 |
60 Days | 0 | 553 |
90 Days | 8 | 1,679 |
Total | 50 | 2,287 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.05% | 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 | 132,089 | 115,092 |
Current | 131,275 | 114,059 |
30 Days | 70 | 452 |
60 Days | 133 | 100 |
90 Days | 611 | 481 |
Total | 814 | 1,033 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.62% | 0.90% |
Consumer Portfolio Segment [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of Loan, Net of Charge-Offs and LIP | 63,243 | 67,509 |
Current | 60,985 | 65,434 |
30 Days | 1,022 | 1,191 |
60 Days | 803 | 446 |
90 Days | 433 | 437 |
Total | $ 2,258 | $ 2,074 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 3.57% | 3.07% |

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