Share-Based Compensation (Schedule Of Non-Vested Restricted Stock Activity) (Details)	3 Months Ended
	Mar. 31, 2021 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Shares, Non-vested at December 31, 2019 (in shares) | shares	68,454
Shares, Vested (in shares) | shares	(2,000)
Shares, Non-vested at September 30, 2020 (in shares) | shares	66,454
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted Average Grant Date Fair Value, Non-vested at December 31, 2019 (in dollars per share) | $ / shares	$ 21.45
Weighted Average Grant Date Fair Value, Vested (in dollars per share) | $ / shares	28.34
Weighted Average Grant Date Fair Value, Non-vested at September 30, 2020 (in dollars per share) | $ / shares	$ 21.24