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Loans Receivable (excluding Covered Loans) (Loans on Non-accrual Status) (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Sep. 30, 2012 | Dec. 31, 2011
--- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | $ 163,116 | $ 173,427 | $ 185,783
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 100.00% | 100.00% |
Residential Portfolio Segment [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 108,570 | 131,193 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 66.60% | 75.70% |
Construction, Speculative [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 9,471 | 10,634 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 5.80% | 6.10% |
Construction, Custom [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 39 | 539 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.00% | 0.30% |
Land, Acquisition and Development [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 14,318 | 13,477 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 8.80% | 7.80% |
Land, Consumer Lot Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 4,024 | 5,149 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 2.50% | 3.00% |
Multi Family Housing [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 7,907 | 4,185 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 4.80% | 2.40% |
Commercial Real Estate Portfolio Segment [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 16,958 | 7,653 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 10.40% | 4.40% |
Commercial and Industrial Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 987 | 16 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.60% | 0.00% |
Home Equity Line of Credit [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 489 | 198 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.30% | 0.10% |
Consumer Portfolio Segment [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | $ 353 | $ 383 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.20% | 0.20% |

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- Definition Reflects the carrying amount of loans deemed to be questionable as to collection on which no interest is continuing to be recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -Subparagraph g -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Loans and Leases Receivable, Ratio of Type of Nonperforming Loans to All Nonperforming Loans + References No definition available. + Details
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