Net Income (Loss) Per Share (Schedule of Net Income (Loss) per Basic and Diluted Shares) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Net income (loss)	$ (353)	$ 1,067	$ 606	$ 1,634
Weighted Average Shares Outstanding, Basic (in shares)	7,117	7,041	7,108	7,012
Per Share Amount, Basic (in dollars per share)	$ (0.05)	$ 0.15	$ 0.09	$ 0.23
Weighted Average Shares Outstanding, Dilutive effect of common equivalent shares (in shares)	0	258	137	164
Per Share Amount, Dilutive effect of common equivalent shares (in usd per share)	$ 0	$ 0	$ (0.01)	$ 0
Weighted Average Shares Outstanding, Dilutive (in shares)	7,117	7,299	7,245	7,176
Per Share Amount, Dilutive (in dollars per share)	$ (0.05)	$ 0.15	$ 0.08	$ 0.23