Stock Options and Restricted Stock - Summary Information about Stock Options Outstanding (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, weighted average exercise price (in dollars per share)	$ 24.21	$ 25.05
$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	167
Options outstanding, weighted average remaining contractual life (in years)	1 year 9 months 15 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 14.11
Options Exercisable	167
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	66
Options outstanding, weighted average remaining contractual life (in years)	3 years 1 month 24 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 19.92
Options Exercisable	66
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	623
Options outstanding, weighted average remaining contractual life (in years)	9 years 1 month 21 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 22.67
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	356
Options outstanding, weighted average remaining contractual life (in years)	7 years 10 months 28 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 28.20
Options Exercisable	199
Options exercisable, weighted average exercise price (in dollars per share)	$ 28.13
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	195
Options outstanding, weighted average remaining contractual life (in years)	7 years 11 months 23 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 31.95
Options Exercisable	58
Options exercisable, weighted average exercise price (in dollars per share)	$ 32.20
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	1,407
Options outstanding, weighted average remaining contractual life (in years)	7 years 6 months 7 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 24.21
Options Exercisable	490
Options exercisable, weighted average exercise price (in dollars per share)	$ 22.73