Equity (Schedule Of Common And Preferred Stock Activity) (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Common Stock [Member]
Class of Stock [Line Items]
Outstanding at the beginning of the year	46,981,000	46,691,000	37,663,000
Issuance of common stock	2,917,000		8,625,000
Exercise of stock options		23,000
Conversion of preferred stock	2,537,000
Issuance of stock based compensation	465,000	267,000	403,000
Outstanding at the end of the year	52,900,000	46,981,000	46,691,000
Series B Preferred Stock [Member]
Class of Stock [Line Items]
Outstanding at the end of the year	20,000	20,000	20,000
Series C Convertible Preferred Stock [Member]
Class of Stock [Line Items]
Outstanding at the beginning of the year	37,000			37,000
Conversion of preferred stock	2,500,000
Conversion to common stock	(22,200)
Outstanding at the end of the year	15,000		37,000	37,000
Treasury Stock [Member]
Class of Stock [Line Items]
Outstanding at the end of the year	(72,000)	(72,000)	(72,000)