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Fair Value Fair Value (Assets and liabilities measured at fair value on a nonrecurring basis) (Details) - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Held-for-sale, Fair Value Disclosure | $ 11,403 | $ 5,264
Loans Receivable, Fair Value Disclosure | 4,940,407 | 4,779,758
Other Assets, Fair Value Disclosure | 4,916,210 | 4,757,461
Fair Value, Measurements, Nonrecurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 12,599 | 16,963
Servicing Asset at Fair Value, Amount | 3,023 | 2,928
Other Assets, Fair Value Disclosure | 8,915 | 10,312
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 12,599 | 16,963
Other Assets, Fair Value Disclosure | 8,915 | 10,312
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Servicing Asset at Fair Value, Amount | 3,023 | 2,928
Commercial Real Estate Portfolio Segment [Member] | Fair Value, Measurements, Nonrecurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 5,785 | 8,481
Commercial Real Estate Portfolio Segment [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 5,785 | 8,481
Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other Assets, Fair Value Disclosure | 1,757 | 2,369
Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other Assets, Fair Value Disclosure | 1,757 | 2,369
Construction Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other Assets, Fair Value Disclosure | 4,354 | 6,473
Construction Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other Assets, Fair Value Disclosure | 4,354 | 6,473
Commercial Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other Assets, Fair Value Disclosure | 2,804 | 1,470
Commercial Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other Assets, Fair Value Disclosure | 2,804 | 1,470
Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 2,073 | 2,921
Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 2,073 | 2,921
Construction Real Estate - Remaining Commercial [Member] | Fair Value, Measurements, Nonrecurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 2,696 | 3,483
Construction Real Estate - Remaining Commercial [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 2,696 | 3,483
Construction Real Estate, SEPH Commercial Land and Development [Member] | Fair Value, Measurements, Nonrecurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 2,045 | 2,078
Construction Real Estate, SEPH Commercial Land and Development [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 2,045 | 2,078
Reported Value Measurement [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Held-for-sale, Fair Value Disclosure | 11,403 | 5,264
Loans Receivable, Fair Value Disclosure | 4,941,429 | 4,775,330
Other Assets, Fair Value Disclosure | 4,917,232 | 4,753,033
Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 4,928,809 | 4,774,424
Other Assets, Fair Value Disclosure | 4,916,210 | 4,757,461
Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Held-for-sale, Fair Value Disclosure | 11,403 | 5,264
Loans Receivable, Fair Value Disclosure | 11,598 | $ 5,334
Fair Value [Member] | Commercial Real Estate Portfolio Segment [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 5,785 |
Fair Value [Member] | Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 2,073 |
Fair Value [Member] | Construction Real Estate - Remaining Commercial [Member] | Construction Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | 2,696 |
Fair Value [Member] | Construction Real Estate, SEPH Commercial Land and Development [Member] | Construction Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans Receivable, Fair Value Disclosure | $ 2,045 |

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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Glossary Loan -URI http://asc.fasb.org/extlink&oid=6517073 + Details
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