Stock Compensation Summary of stock option activity for the period (Details)	9 Months Ended
	Sep. 30, 2015 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at January 1, 2015	1,512,756
Options Granted (in shares)	208,200
Options Exercised, Shares (in shares)	(96,161)
Cancelled or Forfeited (in shares)	(71,567)
Outstanding at September 30, 2015	1,553,228
Exercisable at September 30, 2015	1,179,025
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding, Average Price (in dollars per share) | $ / shares	$ 13.24
Options granted, average exercise price (in dollars per share) | $ / shares	18.67
Options exercised, average exercise price (in dollars per share) | $ / shares	12.53
Cancelled or forfeited, average exercise price (in dollars per share) | $ / shares	17.30
Outstanding, Average Price (in dollars per share) | $ / shares	13.83
Exercisable, Average Exercise Price (in dollars per share) | $ / shares	$ 12.32
Outstanding, Weighted Average Life	5 years 5 months 28 days
Exercisable, Weighted Average Life	4 years 3 months