Employee Benefit Plans (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Compensation and Retirement Disclosure [Abstract]
Defined benefit plan, employer contributions			$ 1.5	$ 2.1
Defined contribution plan, compensation expense	$ 0.8	$ 0.8	$ 2.9	$ 2.5