Stock Based Compensation (Summary of Stock Option Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Stock-Based Compensation [Abstract]
Options, Outstanding, beginning of period	206,463
Options, Granted	0
Options, Exercised	(7,788)
Options, Forfeited	(9,583)
Options, Outstanding, end of period	189,092		206,463
Options, Exercisable, end of period	177,092
Weighted Average Exercise Price Per Share, Outstanding, beginning of period	$ 26.74
Weighted Average Exercise Price Per Share, Granted
Weighted Average Exercise Price Per Share, Exercised	$ 25.71
Weighted Average Exercise Price Per Share, Forfeited	27.02
Weighted Average Exercise Price Per Share, Outstanding, end of period	26.77		$ 26.74
Weighted Average Exercise Price Per Share, Exercisable, end of period	$ 26.61
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	5 years 2 months 12 days		5 years 8 months 12 days
Weighted Average Remaining Contractual Term, Exercised During Period	5 years 2 months 12 days
Weighted Average Remaining Contractual Term, Forfeited During Period	4 years 6 months
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	5 years 2 months 12 days		5 years 8 months 12 days
Weighted Average Remaining Contractual Term, Exercisable at End of Period	5 years
Aggregate Intrinsic Value, Outstanding, beginning of period	$ 478
Aggregate Intrinsic Value, Granted in Period	0
Aggregate Intrinsic Value, Exercised in Period	0
Aggregate Intrinsic Value, Forfeited in Period	0
Aggregate Intrinsic Value, Outstanding, end of period	483		$ 478
Aggregate Intrinsic Value, Exercisable at end of period	480
Unrecognized compensation cost related to non-vested options granted	33
Compensation expense related to stock options	$ 33	$ 80
Share Price	$ 29.32	$ 28.50	$ 29.05