Employee Benefit Plans (Options Outstanding by Exercise Price Range) (Details) - Officer and Employee Plans [Member] - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 10.19	$ 10.29	$ 10.61
Number Outstanding (in shares)	99,617	136,658	170,625
Options Outstanding, Weighted Average Remaining Life	2 years 6 months 25 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 10.19
Exercisable (in shares)	99,617
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 10.19
6.60 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 6.60
Number Outstanding (in shares)	19,250
Options Outstanding, Weighted Average Remaining Life	1 year 2 months 8 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 6.60
Exercisable (in shares)	19,250
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 6.60
6.80 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 6.80
Number Outstanding (in shares)	11,250
Options Outstanding, Weighted Average Remaining Life	1 month 28 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 6.80
Exercisable (in shares)	11,250
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 6.80
9.48 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 9.48
Number Outstanding (in shares)	18,500
Options Outstanding, Weighted Average Remaining Life	2 years 2 months 8 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 9.48
Exercisable (in shares)	18,500
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 9.48
9.60 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 9.60
Number Outstanding (in shares)	21,750
Options Outstanding, Weighted Average Remaining Life	2 years 11 months 26 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 9.60
Exercisable (in shares)	21,750
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 9.60
11.76 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 11.76
Number Outstanding (in shares)	2,266
Options Outstanding, Weighted Average Remaining Life	1 year 6 months
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 11.76
Exercisable (in shares)	2,266
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 11.76
15.05 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 15.05
Number Outstanding (in shares)	26,601
Options Outstanding, Weighted Average Remaining Life	4 years 6 months 25 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 15.05
Exercisable (in shares)	26,601
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 15.05