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Loans (Analysis of Nonaccrual Loans) (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Recorded Investment Nonaccrual Loans | $ 40,317 | $ 27,756
Unpaid Principal Balance Nonaccrual Loans | 60,921 | 42,289
Secured Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Recorded Investment Nonaccrual Loans | 25,187 | 11,524
Unpaid Principal Balance Nonaccrual Loans | 35,843 | 21,503
Unsecured Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Recorded Investment Nonaccrual Loans | 26 | 31
Unpaid Principal Balance Nonaccrual Loans | 1,342 | 303
One-to-Four Family Residential [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Recorded Investment Nonaccrual Loans | 816 | 568
Unpaid Principal Balance Nonaccrual Loans | 2,904 | 1,302
Commercial Land [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Recorded Investment Nonaccrual Loans | 2,333 | 934
Unpaid Principal Balance Nonaccrual Loans | 2,629 | 922
Income Property Multifamily [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Recorded Investment Nonaccrual Loans | 3,586 | 4,005
Unpaid Principal Balance Nonaccrual Loans | 4,702 | 4,247
Owner Occupied [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Recorded Investment Nonaccrual Loans | 3,224 | 6,248
Unpaid Principal Balance Nonaccrual Loans | 4,712 | 9,030
Land And Acquisition [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Recorded Investment Nonaccrual Loans | 26 | 14
Unpaid Principal Balance Nonaccrual Loans | 803 | 102
Residential Construction [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Recorded Investment Nonaccrual Loans | 213 | 549
Unpaid Principal Balance Nonaccrual Loans | 2,568 | 549
Consumer Portfolio Segment [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Recorded Investment Nonaccrual Loans | 4,906 | 3,883
Unpaid Principal Balance Nonaccrual Loans | $ 5,418 | $ 4,331

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- Definition Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date. + 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=84173941&loc=d3e5111-111524 + Details
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