Share-Based Compensation (Summary of Stock Option Activity) (Details) - $ / shares	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Shares [Roll Forward]
Outstanding, beginning of period (in shares)	1,130,910
Granted (in shares)	236,210
Exercised (in shares)	(227,244)
Forfeited or Expired (in shares)	(48,939)
Outstanding, end of period (in shares)	1,090,937
Exercisable, end of period (in shares)	375,795	455,887
Weighted Average Exercise Price [Roll Forward]
Outstanding, beginning of period (weighted average exercise price)	$ 13.38
Granted (weighted average exercise price)	25.03
Exercised (weighted average exercise price)	7.39
Forfeited or Expired (weighted average exercise price)	20.09
Outstanding, end of period (weighted average exercise price)	16.85
Exercisable, end of period (weighted average exercise price)	$ 8.72	$ 7.20