Incentive Compensation Plans (Stock Options) (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	712,318
Number of shares available for grant	162,657
Weighted-average grant-date fair value of stock options granted	$ 5.85
Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Award expiration period	10 years
Stock option exercises	0
Proceeds from stock option exercises		$ 300,000	$ 800,000
Closing stock price	$ 13.51
Aggregate intrinsic value of outstanding stock options	$ 700,000
Aggregate intrinsic value of exercisable stock options	100,000
Aggregate intrinsic value of stock options exercised		100,000	800,000
Total fair value of stock option awards vested	1,200,000	1,000,000	1,700,000
Share-based compensation expense	1,400,000	1,500,000	1,700,000
Unrecognized share-based compensation expense	$ 2,300,000
Unrecognized share-based compensation expense, weighted-average period of recognition	2 years 8 months 12 days
Tax benefit for exercise of stock options	$ 0	$ 0	$ 0
Weighted-average grant-date fair value of stock options granted	$ 5.85	$ 6.99	$ 14.39