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Share-Based Compensation (Stock Options Outstanding) (Details) - Jun. 30, 2015 - $ / shares
Total
Options outstanding, shares outstanding (in shares) 1,166,031.000
Options outstanding, weighted average remaining contractual life (in years) 5 years 4 months 18 days
Options outstanding, weighted average exercise price (in dollars per share) $ 35.09
Options exercisable, shares exercisable (in shares) 879,451
Options exercisable, weighted average exercise price (in dollars per share) $ 33.49
Range One [Member]  
Options outstanding, shares outstanding (in shares) 8,400
Options outstanding, weighted average remaining contractual life (in years) 3 years 5 months 5 days
Options outstanding, weighted average exercise price (in dollars per share) $ 18.14
Options exercisable, shares exercisable (in shares) 8,400
Options exercisable, weighted average exercise price (in dollars per share) $ 18.14
Range of exercise prices, lower limit (in dollars per share) 18.13
Range of exercise prices, upper limit (in dollars per share) $ 22.27
Range Two [Member]  
Options outstanding, shares outstanding (in shares) 30,000
Options outstanding, weighted average remaining contractual life (in years) 4 years 5 months 5 days
Options outstanding, weighted average exercise price (in dollars per share) $ 24.57
Options exercisable, shares exercisable (in shares) 30,000
Options exercisable, weighted average exercise price (in dollars per share) $ 24.57
Range of exercise prices, lower limit (in dollars per share) 22.27
Range of exercise prices, upper limit (in dollars per share) $ 26.38
Range Three [Member]  
Options outstanding, shares outstanding (in shares) 217,558
Options outstanding, weighted average remaining contractual life (in years) 4 years
Options outstanding, weighted average exercise price (in dollars per share) $ 28.94
Options exercisable, shares exercisable (in shares) 178,656
Options exercisable, weighted average exercise price (in dollars per share) $ 28.77
Range of exercise prices, lower limit (in dollars per share) 26.38
Range of exercise prices, upper limit (in dollars per share) $ 30.49
Range Four [Member]  
Options outstanding, shares outstanding (in shares) 299,129
Options outstanding, weighted average remaining contractual life (in years) 4 years 4 months 9 days
Options outstanding, weighted average exercise price (in dollars per share) $ 33.22
Options exercisable, shares exercisable (in shares) 299,129
Options exercisable, weighted average exercise price (in dollars per share) $ 33.22
Range of exercise prices, lower limit (in dollars per share) 30.49
Range of exercise prices, upper limit (in dollars per share) $ 34.60
Range Five [Member]  
Options outstanding, shares outstanding (in shares) 323,995
Options outstanding, weighted average remaining contractual life (in years) 4 years 2 months
Options outstanding, weighted average exercise price (in dollars per share) $ 36.43
Options exercisable, shares exercisable (in shares) 322,345
Options exercisable, weighted average exercise price (in dollars per share) $ 36.43
Range of exercise prices, lower limit (in dollars per share) 34.60
Range of exercise prices, upper limit (in dollars per share) $ 38.71
Range Six [Member]  
Options outstanding, shares outstanding (in shares) 286,949
Options outstanding, weighted average remaining contractual life (in years) 9 years 9 days
Options outstanding, weighted average exercise price (in dollars per share) $ 41.77
Options exercisable, shares exercisable (in shares) 40,921
Options exercisable, weighted average exercise price (in dollars per share) $ 42.69
Range of exercise prices, lower limit (in dollars per share) 38.71
Range of exercise prices, upper limit (in dollars per share) $ 42.82