Stock-Based Compensation Plans (Summary of Nonvested Stock Options) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Awards
Nonvested, beginning	3,100
Granted	0
Vested	(1,250)
Forfeited	0
Nonvested, ending	1,850	3,100
Weighted- Average Grant Date Fair Value
Nonvested, beginning	$ 6.32
Granted	0.00	$ 7.78
Vested	6.09
Forfeited	0.00
Nonvested, ending	$ 6.48	$ 6.32