Loans (Analysis of Nonaccrual Loans) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	$ 36,824	$ 27,756
Unpaid Principal Balance Nonaccrual Loans	54,236	42,289
Secured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	24,663	11,524
Unpaid Principal Balance Nonaccrual Loans	38,586	21,503
Unsecured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	84	31
Unpaid Principal Balance Nonaccrual Loans	237	303
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	697	568
Unpaid Principal Balance Nonaccrual Loans	1,248	1,302
Commercial Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	3,198	934
Unpaid Principal Balance Nonaccrual Loans	3,503	922
Income Property Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	3,411	4,005
Unpaid Principal Balance Nonaccrual Loans	3,741	4,247
Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	658	6,248
Unpaid Principal Balance Nonaccrual Loans	2,137	9,030
Land And Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	27	14
Unpaid Principal Balance Nonaccrual Loans	27	102
Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	214	549
Unpaid Principal Balance Nonaccrual Loans	214	549
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	3,872	3,883
Unpaid Principal Balance Nonaccrual Loans	$ 4,543	$ 4,331