Shares and Stockholders' Equity (Reconciliation Of The Denominator Calculations Of Basic And Diluted EPS) (Details)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 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)	270,265,766	289,055,925
Shares to cover exercise of outstanding warrants (in shares)	10,150,108	10,150,271
Shares to cover conversion of preferred stock (in shares)	152,512	154,499
Shares to cover non-vested stock (in shares)	1,282,721	1,010,689
Average stock options outstanding during the period (in shares)	1,726,615	601,284
Assumed acquisition of shares with assumed proceeds from exercising outstanding warrants (in shares)	(3,630,023)	(4,634,542)
Assumed acquisition of shares with assumed proceeds and benefits from exercising stock options (at average market price for the year) (in shares)	(1,272,272)	(413,777)
Shares repurchaseable from measured but unrecognized stock option expense (in shares)	(83,328)	(14,681)
Weighted-average shares, as used in diluted calculation (in shares)	278,592,099	295,909,668