Stock-Based Compensation (Schedule Of Nonvested Options Status) (Details) - Non Vested Options [Member]	12 Months Ended
	Dec. 31, 2019 $ / shares shares
Shares [Roll Forward]
Outstanding, beginning of period (in shares) | shares	150,000
Granted (in shares) | shares	65,104
Vested (in shares) | shares	(75,000)
Outstanding, end of period (in shares) | shares	140,104
Weighted-average price [Roll forward]
Outstanding, beginning of period (in dollars per share) | $ / shares	$ 2.89
Granted (in dollars per share) | $ / shares	3.84
Vested (in dollars per share) | $ / shares	2.89
Outstanding, end of period (in dollars per share) | $ / shares	$ 3.33