Shareholders' Equity (Schedule Of Other Information Pertaining To Options) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stockholders' Equity [Abstract]
Cash received from the exercise of stock options	$ 8,500	$ 121,000	$ 105,000
Stock-based compensation expense recognized within general and administrative expense on the consolidated statements of operations	213,000	244,000	412,000
Excess income tax benefits from exercise of stock options		$ 71,000	$ 37,000