Pension And Postretirement Obligations (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013 item Y	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Number of defined benefit pension plan	2
Minimum age of employee to enroll in defined benefit pension plan	21
Minimum service period required for employees to enroll in pension plan	1 year
Minimum age of postretirement medical benefit plan enrollment	55
Minimum service period of postretirement medical benefit plan enrollment	10 years
Rate of return assumption	8.00%
Expected contributions	$ 300,000
Participant's contribution percentage	100.00%
Employer matching contribution percentage	100.00%
Company contributions	400,000	400,000	300,000
Deferred compensation liability balance	300,000
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocations minimum	50.00%
Target allocations maximum	60.00%
Incorrectly reported plan asset fair value amount		4,900,000
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocations minimum	40.00%
Target allocations maximum	50.00%
Incorrectly reported plan asset fair value amount		900,000
Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocations minimum	0.00%
Target allocations maximum	10.00%
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Rate of return assumption	8.00%	8.00%
Projected benefit obligation	18,500,000	19,900,000
Fair value of plan assets	13,100,000	12,400,000
Unfunded projected benefit obligation	5,400,000	7,500,000
(Decrease) in pension liability	(2,100,000)
(Decrease) in accumulated other comprehensive loss	(2,300,000)
Company contributions	520,000	455,000
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Rate of return assumption	8.00%	8.00%
Projected benefit obligation	2,800,000
Fair value of plan assets	2,200,000
Unfunded projected benefit obligation	600,000	3,700,000
Increase in fair value of plan assets	800,000
(Decrease) in pension liability	800,000
(Decrease) in accumulated other comprehensive loss	300,000
Assumed health care cost trend rate	8.50%	9.00%
Grading down rate	5.00%
Percentage of health care cost trend rate grade down each year	0.50%
Effect of 1.0% increase on accumulated postretirement benefit obligation	300,000
Effect of 1.0% decrease on accumulated postretirement benefit obligation	200,000
Company contributions	$ 134,000	$ 133,000
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of contributions matched by employer	4.50%
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of contributions matched by employer	4.00%