Retirement Plans (Narrative) (Details)	9 Months Ended
	Sep. 30, 2016 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Estimated contribution in the current year	$ 0
First 1% Of Contribution Saved [Member] | Other Post-Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Matching percentage	100.00%
Percentage of compensation saved	1.00%
Next 5% Of Contribution Saved [Member] | Other Post-Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Matching percentage	50.00%
Percentage of compensation saved	5.00%