Stock Compensation Summary of stock option activity for the period (Details) - Jun. 30, 2015 - $ / shares	Total
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)	(60,734)
Outstanding at June 30, 2015	1,564,061
Exercisable at June 30, 2015	1,172,492
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding, Average Price (in dollars per share)	$ 13.24
Options granted, average exercise price (in dollars per share)	18.67
Options exercised, average exercise price (in dollars per share)	12.53
Cancelled or forfeited, average exercise price (in dollars per share)	17.01
Outstanding, Average Price (in dollars per share)	13.86
Exercisable, Average Exercise Price (in dollars per share)	$ 12.29
Outstanding, Weighted Average Life	5 years 4 months 17 days
Exercisable, Weighted Average Life	4 years 7 months 10 days