Equity Compensation (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Equity Compensation [Abstract]
Maximum shares of common stock	20,000,000		20,000,000
Maximum annual shares awarded to employee			500,000
Shares available for granting additional awards	7,354,911		7,354,911
Unrecognized compensation cost of non-vested equity compensation awards	$ 8.9		$ 8.9
Unrecognized compensation cost of non-vested equity compensation awards expected to be recognized over a weighted average period (years)			2 years 4 months 19 days
Number of options granted	0	0	0	0
Intrinsic value of stock options exercised			$ 0.7	$ 2.0
Stock Options | Minimum
Equity Compensation [Abstract]
Vesting period (months)			24 months
Stock Options | Maximum
Equity Compensation [Abstract]
Vesting period (months)			72 months
Restricted Stock | Minimum
Equity Compensation [Abstract]
Vesting period (months)			12 months
Restricted Stock | Maximum
Equity Compensation [Abstract]
Vesting period (months)			84 months
Performance Shares
Equity Compensation [Abstract]
Fair value of awards vested			$ 1.1
Number of performance awards granted	0	0	202,000	183,000
Number of performance awards earned			182,813
Performance Shares | Minimum
Equity Compensation [Abstract]
Vesting period (months)			12 months
Performance awards, percentage range of target to be earned			0.00%	0.00%
Performance Shares | Maximum
Equity Compensation [Abstract]
Vesting period (months)			60 months
Performance awards, percentage range of target to be earned			132.00%	133.00%
Restricted Stock
Equity Compensation [Abstract]
Number of restricted shares granted	0	0	0	10,000
Fair value of awards vested	$ 0.2	$ 0.2	$ 0.3	$ 0.3
Stock Options
Equity Compensation [Abstract]
Maximum period for exercisable options (years and days)			10 years 1 day