Accrued Interest Receivable and Other Assets (Accrued Interest)(Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accounts Receivable Net Abstract
Accrued Interest Receivable On Non Acquired Loans	$ 46,936	$ 16,706
Accrued Investment Income Receivable	3,033	3,521
Total Interest Receivable	$ 49,969	$ 20,227