Summary Of Significant Accounting Policies (Significant Unobservable Inputs in Asset Valuation) (Details) - Palisades [Member]	Dec. 31, 2016
Weighted Average Cost Of Capital Used In Asset Valuation	6.50%
Operating Margin Used In Asset Valuation	34.60%
Minimum [Member]
Operating Margin Used In Asset Valuation	17.80%
Maximum [Member]
Operating Margin Used In Asset Valuation	38.80%