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Loans (Analysis of Nonaccrual Loans) (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Recorded Investment Nonaccrual Loans | $ 39,038 | $ 54,842
Unpaid Principal Balance Nonaccrual Loans | 48,440 | 65,358
Secured Loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Recorded Investment Nonaccrual Loans | 23,982 | 35,504
Unpaid Principal Balance Nonaccrual Loans | 32,851 | 45,072
Unsecured Loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Recorded Investment Nonaccrual Loans | 15 | 9
Unpaid Principal Balance Nonaccrual Loans | 15 | 9
One-to-Four Family Residential [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Recorded Investment Nonaccrual Loans | 860 | 1,158
Unpaid Principal Balance Nonaccrual Loans | 888 | 1,178
Commercial Land [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Recorded Investment Nonaccrual Loans | 2,565 | 2,261
Unpaid Principal Balance Nonaccrual Loans | 2,573 | 2,270
Income Property Multifamily [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Recorded Investment Nonaccrual Loans | 1,814 | 2,721
Unpaid Principal Balance Nonaccrual Loans | 1,851 | 3,062
Owner Occupied [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Recorded Investment Nonaccrual Loans | 7,464 | 9,922
Unpaid Principal Balance Nonaccrual Loans | 7,601 | 10,300
Land And Acquisition [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Recorded Investment Nonaccrual Loans | 0 | 318
Unpaid Principal Balance Nonaccrual Loans | 0 | 318
Consumer Portfolio Segment [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Recorded Investment Nonaccrual Loans | 2,338 | 2,949
Unpaid Principal Balance Nonaccrual Loans | $ 2,661 | $ 3,149

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