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, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Line Items]
Net income	$ 6,899	$ 5,930	$ 20,622	$ 9,592
Net Income (Loss) Available to Common Stockholders, Basic	$ 6,899	$ 5,930	$ 20,622	$ 9,592
Basic EPS, Common Shares (Denominator) (in shares)	12,374,350	12,299,987	12,366,612	11,781,342
Basic EPS (in dollars per share)	$ 0.56	$ 0.48	$ 1.67	$ 0.81
Diluted EPS, Stock options, Common Shares (Denominator) (in shares)	7,349	10,911	7,561	11,336
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	57,352	8,061	56,054	14,324
Diluted EPS, Income (Numerator)	$ 6,899	$ 5,930	$ 20,622	$ 9,592
Diluted EPS, Common Shares (Denominator) (in shares)	12,439,051	12,318,959	12,430,227	11,807,002
Diluted EPS (in dollars per share)	$ 0.55	$ 0.48	$ 1.66	$ 0.81