Discontinued Operations (Schedule Of Various Elements Of The Lower Of Cost Or Market Valuation) (Details)	12 Months Ended
	Dec. 31, 2015
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	3.37%
Large Balance Commercial Loans [Member] | Maximum [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	9.09%
Large Balance Commercial Loans [Member] | Minimum [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	3.13%
Small Balance Commercial Loans [Member] | Maximum [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	7.08%
Small Balance Commercial Loans [Member] | Minimum [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	4.18%