Net Income Per Share (Schedule Of Net Income Per Basic And Diluted Shares) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Net Income	$ 1,095	$ 2,041	$ 881	$ 4,304
Weighted Average Shares Outstanding, Basic (in shares)	6,944	6,803	6,928	6,790
Per Share Amount, Basic (in dollars per share)	$ 0.16	$ 0.30	$ 0.13	$ 0.63
Weighted Average Shares Outstanding, dilutive effect of common equivalent shares, (in shares)	309	248	155	153
Per Share Amount, Dilutive effect of common equivalent shares (in dollars per share)	$ (0.01)	$ (0.01)	$ (0.01)	$ (0.01)
Weighted Average Shares Outstanding, Dilutive (in shares)	7,253	7,051	7,083	6,943
Per Share Amount, Dilutive (in dollars per share)	$ 0.15	$ 0.29	$ 0.12	$ 0.62