Equity Compensation (Schedule of Equity Compensation Stock Options Activity) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Equity Compensation Arrangement by Share-based Payment Award [Abstract]
Number of Options Outstanding at beginning of period	248
Number of Options granted	0	0
Number of Options exercised	(40)
Number of Options forfeited	0
Number of Options expired	0
Number of Options Outstanding at end of period	208
Number of Options Exercisable at end of period	161
Weighted Average Exercise Price Outstanding at beginning of period	$ 18.18
Weighted Average Exercise Price Options granted	$ 0.00
Weighted Average Exercise Price Options exercised	$ 17.47
Weighted Average Exercise Price Options forfeited	$ 0.00
Weighted Average Exercise Price Options expired	$ 0.00
Weighted Average Exercise Price Outstanding at end of period	$ 18.32
Weighted Average Exercise Price Exercisable at end of period	$ 17.77
Weighted Average Remaining Contractual Term Outstanding at end of period, Years	3 years 8 months 26 days
Weighted Average Remaining Contractual Term Exercisable at end of period, Years	3 years 3 months 1 day
Aggregate Intrinsic Value Outstanding at end of period	$ 2,726
Aggregate Intrinsic Value Exercisable at end of period	$ 2,194