Share-Based Payment Arrangements (Summary of the Status of Stock Options) (Details) - Jun. 30, 2015 - USD ($) $ / shares in Units, $ in Thousands	Total
Share-Based Payment Arrangements [Abstract]
Stock Options, Outstanding at January 1, 2015	1,062,134
Stock options, granted
Stock Options, Exercised	(85,756)
Stock Options, Forfeited or Expired	(45,718)
Stock Options, Outstanding at June 30, 2015	930,660
Stock Options, Exercisable at June 30, 2015	876,732
Weighted Average Exercise Price, Outstanding at January 1, 2015	$ 9.51
Weighted Average Exercise Price, Exercised	6.94
Weighted Average Exercise Price, Forfeited or Expired	11.48
Weighted Average Exercise Price, Outstanding at June 30, 2015	9.65
Weighted Average Exercise Price, Exercisable at June 30, 2015	$ 9.87
Average Remaining Contractual Term, Outstanding at June 30, 2015	2 years 10 months 24 days
Average Remaining Contractual Term, Exercisable at June 30, 2015	2 years 10 months 24 days
Aggregate Intrinsic Value, Outstanding at June 30, 2015	$ 1,961
Aggregate Intrinsic Value, Exercisable at June 30, 2015	$ 1,703