Employee Benefit Plans (Narrative) (Details) (USD $)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Common stock issued as stock awards	16,876	16,000
Incentive stock options and SARs exercisable period	10 years
Proceeds from exercise of stock options	$ 544,000	$ 168,000
Total intrinsic value of stock options exercised	100,000	100,000
Unrecognized stock-based compensation expense	500,000
Weighted-average period, unrecognized expense expected to be recognized	1 year 7 months 6 days
Stock-based compensation expense related to restricted shares	500,000	400,000
Non-Vested Restricted Shares [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unrecognized stock-based compensation expense	2,400,000
Weighted-average period, unrecognized expense expected to be recognized	4 years 7 months 6 days
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	1,000,000
Common stock issued as stock awards	350,000
Stock-based compensation expense	$ 200,000	$ 200,000