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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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5111-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
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