Share-Based Compensation Plans Textuals (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense from share-based compensation awards	$ 4.8
Weighted-average period of recognition of unrecognized compensation expense (in years)	2 years 9 months 18 days
Restricted shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense from share-based compensation awards	$ 3.0
Weighted-average period of recognition of unrecognized compensation expense (in years)	2 years 3 months 18 days