Stock-Based Compensation Stock-Based Compensation (Activity Pertaining to Stock Appreciation Rights) (Details) (Stock Appreciation Rights (SARs) [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, beginning balance	145,901	145,901	145,901
Weighted average grant date price, beginning balance	$ 46.59	$ 46.59	$ 46.59
Number of shares, granted	0	0	0
Weighted average grant date price, granted	$ 0	$ 0	$ 0
Number of shares, exercised	0	0	0
Weighted average grant date price, exercised	$ 0	$ 0	$ 0
Number of shares, forfeited	0	0	0
Weighted average grant date price, forfeited	$ 0	$ 0	$ 0
Number of shares, ending balance	145,901	145,901	145,901
Weighted average grant date price, ending balance	$ 46.59	$ 46.59	$ 46.59