Earnings Per Share (Computations Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Line Items]
Anti-dilutive stock options	300			7,700
Net income	$ 6,949	$ 8,564	$ 11,455	$ 15,656
Net Income (Loss) Available to Common Stockholders, Basic	$ 6,949	$ 8,564	$ 11,455	$ 15,656
Basic EPS, Common Shares (Denominator) (in shares)	12,911,979	12,539,095	12,940,590	12,627,806
Basic EPS (in dollars per share)	$ 0.54	$ 0.68	$ 0.89	$ 1.24
Diluted EPS, Stock options, Common Shares (Denominator) (in shares)	4,227	5,052	4,371	5,182
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	27,598	55,924	38,001	55,877
Diluted EPS, Income (Numerator)	$ 6,949	$ 8,564	$ 11,455	$ 15,656
Diluted EPS, Common Shares (Denominator) (in shares)	12,943,804	12,600,071	12,983,146	12,688,865
Diluted EPS (in dollars per share)	$ 0.54	$ 0.68	$ 0.88	$ 1.23
Restricted Stock Units (RSUs) [Member]
Earnings Per Share [Line Items]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	0	0	183	0