Share-based Compensation (Option Price Ranges) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Stock options outstanding	139,878
Stock options outstanding, Weighted Average Remaining Contractual Term (in years)	2 years 3 months 25 days	1 year 10 months 17 days	1 year	1 year 2 months 1 day
Stock options outstanding, Weighted Average Exercise Price (in dollars per share)	$ 15.17	$ 16.41	$ 8.28	$ 4.03
Stock options exercisable	64,128
Stock options exercisable, Weighted Average Exercise Price (in dollars per share)	$ 10.31
$2.18-$2.36 Exercise Price Range
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Shares authorized under stock option plans, exercise price range, lower range limit	2.18
Shares authorized under stock option plans, exercise price range, upper range limit	$ 2.36
Stock options outstanding, by exercise price range	27,000
Stock options outstanding, Weighted Average Remaining Contractual Term (in years)	4 months 28 days
Stock options outstanding, Weighted Average Exercise Price, by exercise price range (in dollars per share)	$ 2.27
Stock options exercisable, by exercise price range	27,000
Stock options exercisable, Weighted Average Exercise Price, by exercise price range (in dollars per share)	$ 2.27
$14.89-$16.94 Exercise Price Range
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Shares authorized under stock option plans, exercise price range, lower range limit	14.89
Shares authorized under stock option plans, exercise price range, upper range limit	$ 16.94
Stock options outstanding, by exercise price range	70,878
Stock options outstanding, Weighted Average Remaining Contractual Term (in years)	2 years 5 days
Stock options outstanding, Weighted Average Exercise Price, by exercise price range (in dollars per share)	$ 15.88
Stock options exercisable, by exercise price range	37,128
Stock options exercisable, Weighted Average Exercise Price, by exercise price range (in dollars per share)	$ 16.16
$21.19-$28.59 Exercise Price Range
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Shares authorized under stock option plans, exercise price range, lower range limit	21.19
Shares authorized under stock option plans, exercise price range, upper range limit	$ 28.59
Stock options outstanding, by exercise price range	42,000
Stock options outstanding, Weighted Average Remaining Contractual Term (in years)	4 years 25 days
Stock options outstanding, Weighted Average Exercise Price, by exercise price range (in dollars per share)	$ 22.25
Stock options exercisable, by exercise price range	0
Stock options exercisable, Weighted Average Exercise Price, by exercise price range (in dollars per share)	$ 0.00