Troubled Debt Restructurings (Loans By Class Of Financing Receivable Modified As TDRs) (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017 USD ($) contract	Jun. 30, 2016 USD ($) contract	Jun. 30, 2017 USD ($) contract	Jun. 30, 2016 USD ($) contract	Dec. 31, 2016 contract
Troubled Debt Restructuring, Subsequent Periods [Line Items]
Number of Contracts			22		26
Troubled Debt Restructurings Within Previous Twelve Months [Member]
Troubled Debt Restructuring, Subsequent Periods [Line Items]
Number of Contracts	1	0	1	1
Recorded Investment \| $	$ 236	$ 0	$ 236	$ 107
Residential Single Family \| Troubled Debt Restructurings Within Previous Twelve Months [Member]
Troubled Debt Restructuring, Subsequent Periods [Line Items]
Number of Contracts	1		1	1
Recorded Investment \| $	$ 236		$ 236	$ 107