Earnings Per Share (Computations Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Line Items]
Anti-dilutive stock options	300			7,700
Net income	$ 9,620	$ 8,061	$ 21,075	$ 23,718
Net Income (Loss) Available to Common Stockholders, Basic	$ 9,620	$ 8,061	$ 21,075	$ 23,718
Basic EPS, Common Shares (Denominator) (in shares)	12,922,158	12,412,982	12,934,401	12,555,411
Basic EPS (in dollars per share)	$ 0.74	$ 0.65	$ 1.63	$ 1.89
Diluted EPS, Stock options, Common Shares (Denominator) (in shares)	4,182	4,654	4,308	5,006
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	23,244	50,142	33,082	53,965
Diluted EPS, Income (Numerator)	$ 9,620	$ 8,061	$ 21,075	$ 23,718
Diluted EPS, Common Shares (Denominator) (in shares)	12,949,584	12,467,778	12,971,913	12,614,382
Diluted EPS (in dollars per share)	$ 0.74	$ 0.65	$ 1.62	$ 1.88
Restricted Stock Units (RSUs) [Member]
Earnings Per Share [Line Items]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	0	0	0	0