Retirement Plans SERP (Details) - Supplemental Employee Retirement Plans, Defined Benefit - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Annual Benefit Amount	$ 50,000
Year of Benefit	20 years
Defined Benefit Plan, Other Information-Number of Employees Covered	2
Defined Benefit Plan, Other Costs	$ 29,000	$ 15,000	$ 17,000
Pension and Other Postretirement Defined Benefit Plans, Liabilities	$ 715,000	$ 785,000