Stock Options and Restricted Stock - Summary Information about Stock Options Outstanding (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, weighted average exercise price (in dollars per share)	$ 25.05	$ 21.52
$10.01-15.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower range limit (in dollars per share)	10.01
Exercise price, upper range limit (in dollars per share)	$ 15.00
Options Outstanding	199,000
Options outstanding, weighted average remaining contractual life (in years)	2 years 9 months 15 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 14.11
Options Exercisable	199,000
Options exercisable, weighted average exercise price (in dollars per share)	$ 14.11
15.01-20.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower range limit (in dollars per share)	15.01
Exercise price, upper range limit (in dollars per share)	$ 20.00
Options Outstanding	82,500
Options outstanding, weighted average remaining contractual life (in years)	4 years 1 month 24 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 19.92
Options Exercisable	82,500
Options exercisable, weighted average exercise price (in dollars per share)	$ 19.92
20.01-25.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower range limit (in dollars per share)	20.01
Exercise price, upper range limit (in dollars per share)	$ 25.00
Options Outstanding	7,521
Options outstanding, weighted average remaining contractual life (in years)	8 years 10 months 6 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 24.98
Options Exercisable	0
Options exercisable, weighted average exercise price (in dollars per share)	$ 0.00
25.01-30.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower range limit (in dollars per share)	25.01
Exercise price, upper range limit (in dollars per share)	$ 30.00
Options Outstanding	380,646
Options outstanding, weighted average remaining contractual life (in years)	8 years 10 months 28 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 28.23
Options Exercisable	53,640
Options exercisable, weighted average exercise price (in dollars per share)	$ 27.80
30.01-32.20
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower range limit (in dollars per share)	30.01
Exercise price, upper range limit (in dollars per share)	$ 32.20
Options Outstanding	202,687
Options outstanding, weighted average remaining contractual life (in years)	8 years 11 months 19 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 31.93
Options Exercisable	0
Options exercisable, weighted average exercise price (in dollars per share)	$ 0.00
10.01-32.20
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower range limit (in dollars per share)	10.01
Exercise price, upper range limit (in dollars per share)	$ 32.20
Options Outstanding	872,354
Options outstanding, weighted average remaining contractual life (in years)	7 years 29 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 25.05
Options Exercisable	335,140
Options exercisable, weighted average exercise price (in dollars per share)	$ 17.73