Employee Benefit Plans (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Annual benefits paid to retired participants			$ 0.3
Pension Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Benfit plan, cash contributions	$ 1.0	$ 0.8	1.0	$ 1.3
Expected cash contributions			2.3
Other Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Benfit plan, cash contributions	$ 0.8	$ 0.2	0.8	$ 0.4
Expected cash contributions			$ 0.9