Stock Based Compensation Stock Options (Details) - Dec. 31, 2014 - Stock Options [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	Total
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, period start, number of shares	125
Granted, number of shares	0
Forfeited, number of shares	0
Exercised, number of shares	(13)
Outstanding, period end, number of shares	112
Outstanding, period start, weighted average exercise price	$ 22.29
Granted, weighted average exercise price	0.00
Forfeited, weighted average exercise price	0.00
Exercised, weighted average exercise price	19.54
Outstanding, period end, weighted average exercise price	$ 22.62
Outstanding, period end, intrinsic value	$ 4,412
Vested, period end, number of shares	112
Vested, period end, weighted average exercise price	$ 22.62
Vested, period end, intrinsic value	$ 4,412
Exercisable, period end, number of shares	112
Exercisable, period end, weighted average exercise price	$ 22.62
Exercisable, period end, intrinsic value	$ 4,412