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
Compensation and Retirement Disclosure [Abstract]
Defined benefit plan, employer contributions			$ 1.5	$ 2.1
Defined contribution plan, compensation expense	$ 0.8	$ 0.8	$ 2.1	$ 1.7