Stock-Based Compensation (Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range) (Details) (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number outstanding June 30, 2014 (in shares)	152,852	159,517
Weighted average remaining contractual life (in years)	8 months 12 days	1 year
Weighted average exercise price (in dollars per share)	$ 20.30	$ 20.12
Option Exercisable One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number outstanding June 30, 2014 (in shares)	65,417
Weighted average remaining contractual life (in years)	1 year
Weighted average exercise price (in dollars per share)	$ 15.89
Option Exercisable Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number outstanding June 30, 2014 (in shares)	66,224
Weighted average remaining contractual life (in years)	2 years
Weighted average exercise price (in dollars per share)	$ 22.29
Option Exercisable Four [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number outstanding June 30, 2014 (in shares)	21,211
Weighted average remaining contractual life (in years)	4 years
Weighted average exercise price (in dollars per share)	$ 27.70