Stock-Based Compensation Plans (Schedule of Nonvested Stock Option Activity) (Details)	12 Months Ended
	Dec. 31, 2019 $ / shares shares
Number of Shares [Abstract]
Nonvested Options, Outstanding, Number, Beginning | shares	480,785
Nonvested Options, Vested in Period, Number | shares	(391,388)
Nonvested Options, Forfeited, Number | shares	(2,507)
Nonvested Options, Outstanding, Number, Ending | shares	86,890
Weighted-Average Price Per Share [Abstract]
Nonvested Stock Options Outstanding, Weighted Average Grant Date Price, Beginning | $ / shares	$ 2.09
Nonvested Options, Vested in Period, Weighted Average Grant Date Price | $ / shares	1.59
Nonvested Options Forfeited, Weighted Average Grant Date Fair Value | $ / shares	4.30
Nonvested Stock Options Outstanding, Weighted Average Grant Date Price, Ending | $ / shares	$ 4.28