Share Based Compensation (Details) (Performance Units [Member], USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended			0 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Jan. 31, 2014	Feb. 21, 2014 Performance Unit Plan [Member]	Mar. 31, 2014 Performance Unit Plan [Member]	Jan. 31, 2014 Director Incentive Agreement [Member]	Mar. 31, 2014 Director Incentive Agreement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted during period (in units)				21,991		4,683
Award vesting period					5 years		3 years
Compensation expense	$ 0.8	$ 0.9
Cash payments distributed related to awards previously granted and now payable			1.2
Awards forfeited during period	0	0
Outstanding awards vested during period	$ 3.9