Shareholders' Equity (Summary of Stock Option Activity) (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of Options Outstanding at Beginning of Period (in shares) | shares	51,517
Number of Options Granted (in shares) | shares	0
Number of Options Exercised (in shares) | shares	(44,500)
Number of Options Forfeited (in shares) | shares	0
Number of Options Expired (in shares) | shares	0
Number of Options Outstanding and Exercisable at End of Period (in shares) | shares	7,017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Price of Options Outstanding at Beginning of Period (in USD per share) | $ / shares	$ 16.70
Weighted Average Price of Options Granted (in USD per share) | $ / shares	0.00
Weighted Average Price of Options Exercised (in USD per share) | $ / shares	17.24
Weighted Average Price of Options Forfeited (in USD per share) | $ / shares	0.00
Weighted Average Price of Options Expired (in USD per share) | $ / shares	0.00
Weighted Average Price of Options Outstanding and Exercisable at End of Period (in USD per share) | $ / shares	$ 13.25
Weighted Average Life of Options (in years) Outstanding and Exercisable at End of Period	5 months 1 day
Options, Outstanding, Aggregate Intrinsic Value | $	$ 141