Stock-Based Compensation Plans (Schedule of Compensation Expense Recognized in Connection with LTIP) (Details) (Long-Term Performance Share Plan [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Long-Term Performance Share Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 200	$ 174	$ 672
Related income tax benefit	70	61	235
Fair value of grants vested	$ 497	$ 609	$ 570