Shares and Stockholders' Equity (Reconciliation Of The Denominator Calculations Of Basic And Diluted EPS) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Reconciliation of the denominator (number of shares) in the calculations of basic and diluted earnings (loss) per common share Table
Weighted-average shares, as used in basic calculation (in shares)	266,367,162	282,085,602	268,305,694	285,570,764
Shares to cover exercise of outstanding warrants (in shares)	10,150,032	10,150,192	10,150,070	10,150,231
Shares to cover conversion of preferred stock (in shares)	146,840	154,112	149,661	154,305
Shares to cover non-vested stock (in shares)	1,351,093	1,110,662	1,316,907	1,060,676
Average stock options outstanding during the period (in shares)	2,600,595	507,944	2,163,605	554,614
Assumed acquisition of shares with assumed proceeds from exercising outstanding warrants (in shares)	(2,903,393)	(4,887,102)	(3,266,708)	(4,760,822)
Assumed acquisition of shares with assumed proceeds and benefits from exercising stock options (at average market price for the year) (in shares)	(1,912,155)	(346,700)	(1,592,213)	(380,239)
Shares repurchaseable from measured but unrecognized stock option expense (in shares)	(141,826)	(1,768)	(112,577)	(8,224)
Average deferred compensation shares (in shares)		1,187,598		1,206,501
Weighted-average shares, as used in diluted calculation (in shares)	275,658,348	289,960,540	277,114,439	293,547,806