Shareholders' Equity (Stock Options) (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding - January 1, Options (in shares)	1,217,003
Granted, Options (in shares)	18,500	176,125
Exercised, Options (in shares)	(142,963)
Forfeited or Expired, Options (in shares)	(140,086)
Outstanding - September 30, Options (in shares)	952,454
Exercisable - September 30, Options (in shares)	530,602
Outstanding - December 31, Weighted Avg Exercise Price (in dollars per share)	$ 18.70
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	23.00
Exercised, Weighted Avg Exercise Price (in dollars per share)	16.95
Forfeited or Expired, Weighted Avg Exercise Price (in dollars per share)	17.66
Outstanding - September 30, Weighted Avg Exercise Price (in dollars per share)	19.20
Exercisable - September 30, Weighted Avg Exercise Price (in dollars per share)	$ 18.05
Outstanding - March 31, Weighted Avg Remaining Contractual Term	3 years 6 months 11 days
Exercisable - March 31, Weighted Avg Remaining Contractual Term	2 years 9 months 11 days
Exercised, Aggregate Intrinsic Value (In thousands)	$ 664
Outstanding - September 30, Aggregate Intrinsic Value (In thousands)	7,453
Exercisable - September 30, Aggregate Intrinsic Value (In thousands)	$ 4,766