Computation of Net Loss Per Share of Common Stock (Components Of Net Income (Loss) Per Basic And Diluted Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net loss per share – basic
Net loss	$ 2,396	$ (2,309)	$ (3,665)	$ (8,482)
Weighted average number of shares outstanding, basic (in shares)	9,559	9,404	9,472	9,335
Earnings per share, basic (in dollars per share)	$ 0.25	$ (0.25)	$ (0.39)	$ (0.91)
Net loss per share – diluted
Net income (loss) available to common stockholders, diluted	$ 2,396	$ (2,309)	$ (3,665)	$ (8,482)
Incremental common shares attributable to dilutive effect of call options and warrants (in shares)	150	0	0	0
Weighted average number of shares outstanding, diluted (in shares)	9,709	9,404	9,472	9,335
Earnings per share, diluted (in dollars per share)	$ 0.25	$ (0.25)	$ (0.39)	$ (0.91)
Stock Options And Restricted Stock Units [Member]
Net loss per share – basic
Incremental common shares attributable to dilutive effect of nonvested shares with forfeitable dividends	150	0	0	0