Employee Benefits Plans (Details) - Funded status - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Change in benefit obligation:
Actuarial (gain) loss	$ 497	$ (1,013)
Deferred Compensation Plan [Member]
Change in benefit obligation:
Beginning benefit obligation	5,412	4,952
Interest cost	182	189
Actuarial (gain) loss	(395)	721
Employer contributions	450	450
Benefits paid	(450)	(450)
Ending benefit obligation	4,749	5,412
Change in plan assets:
Funded status	(4,749)	(5,412)
Supplemental Employee Retirement Plan [Member]
Change in benefit obligation:
Beginning benefit obligation	2,129	1,937
Interest cost	72	74
Actuarial (gain) loss	(93)	291
Employer contributions	156	173
Benefits paid	(156)	(173)
Ending benefit obligation	1,952	2,129
Change in plan assets:
Funded status	(1,952)	(2,129)
Other Postretirement Benefit Plan [Member]
Change in benefit obligation:
Beginning benefit obligation	932	1,066
Interest cost	26	34
Plan participants’ contributions	50	57
Actuarial (gain) loss	(9)	1
Employer contributions	122	169
Benefits paid	(172)	(226)
Ending benefit obligation	827	932
Change in plan assets:
Funded status	$ (827)	$ (932)