Commitments (Summarized credit-related financial instruments) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Commitments and Contingencies [Abstract]
Commitments To Extend Credit	$ 434,051	$ 492,885
Commercial letters credit	1,501	2,721
Standby letters of credit and financial guarantees	13,420	4,041
Loans sold with recourse	$ 6,640	$ 20,126