Consolidated Statements of Changes in Shareholders' Equity (Parentheticals)(Common Stock [Member])	12 Months Ended
	Dec. 31, 2011 Stock Issued To Directors [Member]	Dec. 31, 2010 Stock Issued To Directors [Member]	Dec. 31, 2009 Stock Issued To Directors [Member]	Dec. 31, 2011 Bonuses Paid Through Stock Issuances [Member]	Dec. 31, 2010 Bonuses Paid Through Stock Issuances [Member]	Dec. 31, 2009 Bonuses Paid Through Stock Issuances [Member]	Dec. 31, 2009 Common Stock And Warrant Private Placement Issuance [Member]	Dec. 31, 2009 Common Stock And Warrant Public Offering [Member]	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Options exercised, shares									78,000	696,000	10,000
Shares issued, share based compensation	43,000	82,000	23,000	8,000	1,046,000	925,000
Restricted stock unit distributions, shares									321,000	480,000	152,000
Common stock and warrant issuance, shares							17,391,000	36,800,000
Warrants exercised, shares									2,147,000	14,215,000	24,000
Conversion of convertible preferred stock to common shares, number of shares									18,872,000		2,629,000
6.5% Mandatory Convertible Preferred Stock dividends paid in common stock, shares										3,886,000
Common stock issued for assets purchased, shares									5,396,000