Employee Benefit Plans (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Proceeds from exercise of stock options	$ 2.7	$ 0.6
Total intrinsic value of stock options exercised	0.7	0.3
Stock-based compensation expense	0.2	0.1
Stock-based compensation expense related to restricted shares	0.9	0.8
Total expense associated with the retirement benefit plan	0.6	0.6
Contributions made by company	$ 0.3	$ 0.3
Employee Stock Option [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Incentive stock options and SARs exercisable period	10 years
Stock options awarded	438,515
Unrecognized stock-based compensation expense	$ 0.5
Weighted-average period, unrecognized expense expected to be recognized	1 year 5 months
Restricted Stock [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock options awarded	241,596
Unrecognized stock-based compensation expense	$ 3.1
Weighted-average period, unrecognized expense expected to be recognized	3 years 4 months
Performance Shares [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	33.33%
Maximum [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Common stock issued upon the exercise of stock options, SARs and stock awards	750,000
Share-based Compensation Award, Tranche One [Member] | Performance Shares [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Median Return on Average Assets of all FDIC Insured Depository Institutions Time Period	20 years
Share-based Compensation Award, Tranche Two [Member] | Performance Shares [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Median Return on Average Assets of all FDIC Insured Depository Institutions Time Period	20 years
Share-based Compensation Award, Tranche Three [Member] | Performance Shares [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Median Return on Average Assets of all FDIC Insured Depository Institutions Time Period	20 years