Borrowed Funds (Summary of Short Term Borrowings) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Outstanding at end of period	$ 20,357	$ 35,828
Weighted average interest rate	0.13%	0.16%
Maximum amount outstanding as of any month end	$ 30,342	$ 47,131
Average amount outstanding	$ 28,752	$ 35,908
Securities Sold under Agreements to Repurchase [Member]
Weighted average interest rate	0.09%	0.16%