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Income Taxes (Narratives) (Details) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Income Taxes [Abstract]          
Unrecognized Tax Benefits, Interest on Income Taxes Accrued $ 112,000   $ 112,000   $ 175,000
Deferred Tax Assets, Net 131,061,000   131,061,000   145,901,000
OtherComprehensiveIncomeLossTax     43,000   1,182,000
Income Tax Expense (Benefit) 3,627,000 $ 562,000 15,146,000 $ 2,310,000  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued 2,000,000   2,000,000   2,200,000
Increase In Unrecognized Tax Benefits 1,100,000   1,100,000    
Decrease In Unrecognized Tax Benefits Is Reasonably Possible $ 1,300,000   1,300,000    
International Banking Entity [Member]          
OtherComprehensiveIncomeLossTax     $ 117,000   $ 141,000