Stock Compensation Plans - Text (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 2006 Long-Term Incentive Plan [Member]	Dec. 31, 2009 2006 Long-Term Incentive Plan [Member]	Dec. 31, 2013 Prior To 2009 Long Term Incentive Plans [Member]	Dec. 31, 2013 2009 Long Term Incentive Plan [Member]	Dec. 31, 2013 2010 Long-Term Incentive Plan [Member]	Dec. 31, 2013 Restricted Stock Awards [Member]
Stock Compensation Plans (Textual) [Abstract]
Number of shares reserved (in shares)				1,500,000				2,000,000
Period of vesting of awards				3 years
Period of life of awards granted				10 years		6 years	10 years	10 years
Total number of securities remaining available for future awards								795,852
Vesting of granted awards				3 years				3 years
Restricted stock awards, granted (in shares)	268,300	417,420	379,425		40,000
Share-based compensation expense	$ 3.8	$ 4.5	$ 3.2
Restricted stock expense	1.3	0	1.7
Unrecognized stock compensation expense	$ 2.0								$ 2.1
Expected weighted average period of recognition	0 years 8 months 12 days								1 year 3 months 18 days
Restricted stock awards fair value, granted (in dollars per share)	$ 12.25	$ 12.36	$ 11.42		$ 28.42