Fair Value Measurement (Changes in Fair Value Carrying Amount of Residential Mortgages) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Fair Value of Assets Loans Receivable Aggregate Unpaid Principal [Line Items]
Loans held for sale, Fair Value	$ 5,472	$ 13,428
Aggregate Fair Value
Fair Value of Assets Loans Receivable Aggregate Unpaid Principal [Line Items]
Loans held for sale, Fair Value		13,428
Contractual Balance
Fair Value of Assets Loans Receivable Aggregate Unpaid Principal [Line Items]
Loans held for sale, Fair Value	5,320	12,912
Carrying amount over aggregate unpaid principal	$ 152	$ 516