Common Stock Options And Stock Purchase Plan (Schedule Of Stock Options Activity) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
Employee Stock Option [Member]
Beginning balance, Number of Shares	11,980		16,480
Granted, Number of Shares	0		0
Exercised, Number of Shares	0		4,500
Canceled/forfeited/expired, Number of Shares	0		0
Ending balance, Number of Shares	11,980		11,980	16,480
Vested and exercisable, Number of Shares	11,980
Beginning balance, Weighted-Average Exercise Price	$ 4.16		$ 3.06
Exercised, Weighted-Average Exercise Price			$ 2.37
Ending balance, Weighted-Average Exercise Price	$ 4.16		$ 4.16	$ 3.06
Vested and exercisable, Weighted-Average Exercise Price	$ 4.16
Balance, Weighted-Average Remaining Contractual Term	1 year 7 months 6 days		2 years 7 months 6 days	2 years 2 months 12 days
Vested and exercisable, Weighted-Average Remaining Contractual Term	1 year 7 months 6 days
Balance, Aggregate Intrinsic Value	$ 0	[1]
Vested and exercisable, Aggregate Intrinsic Value	0	[1]
Director Stock Option [Member]
Beginning balance, Number of Shares	5,000		5,000
Granted, Number of Shares	10,000		0
Exercised, Number of Shares	0		0
Canceled/forfeited/expired, Number of Shares	5,000		0
Ending balance, Number of Shares	10,000		5,000	5,000
Vested and exercisable, Number of Shares	10,000
Beginning balance, Weighted-Average Exercise Price	$ 5.36		$ 5.36
Granted, Weighted-Average Exercise Price	$ 4.15
Canceled/forfeited/expired, Weighted-Average Exercise Price	$ 5.36
Ending balance, Weighted-Average Exercise Price	$ 4.15		$ 5.36	$ 5.36
Vested and exercisable, Weighted-Average Exercise Price	$ 4.15
Balance, Weighted-Average Remaining Contractual Term	9 years 6 months		5 years 3 months 18 days	6 years 3 months 18 days
Vested and exercisable, Weighted-Average Remaining Contractual Term	9 years 6 months
Balance, Aggregate Intrinsic Value	0	[1]
Vested and exercisable, Aggregate Intrinsic Value	$ 0	[1]

[1] The aggregate intrinsic value is calculated as approximately the difference between the weighted average exercise price of the underlying awards and the Company’s estimated current fair market value at December 31, 2012.