Other Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Income and Expenses [Abstract]
Information Technology Services	$ 5,028	$ 4,706	$ 3,909
Legal and Other Professional Fees	2,194	2,119	2,188
Postage and Courier	947	1,087	1,050
Advertising and Promotion	1,035	1,084	965
Stationery and Printing	841	892	796
Telephone and Communications	797	840	832
Intangible Asset Amortization	279	297	327
All Other		3,776	3,846
Total Other Operating Expense	$ 15,088	$ 14,801	$ 13,913