Other Operating Expense (Schedule of Other Operating Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Income and Expenses [Abstract]
Postage and supplies	$ 1,925	$ 1,954	$ 2,008
Promotional expense	2,187	2,268	2,049
Professional fees	1,930	1,690	1,566
Outside service fees	3,316	2,848	2,876
Data processing services	372	357	338
Telecommunications	1,000	1,068	1,045
Other	1,913	1,185	1,647
Total other operating expense	$ 12,643	$ 11,370	$ 11,529