Employee Retirement Plans (Schedule of Funded Status) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation at	$ 1,961	$ 2,179	$ 2,478
Service cost	0	0	0
Interest cost	66	88	80
Actuarial (gains) losses	(39)	9	(58)
Benefits paid	(303)	(315)	(321)
Projected benefit obligation at	1,685	1,961	2,179
Fair value of plan assets	0	0	0
Under funded status	(1,685)	(1,961)	(2,179)
Unamortized prior service cost	10	24	39
Unrecognized actuarial gain	(218)	(179)	(188)
Net amount recognized	$ (1,893)	$ (2,116)	$ (2,328)