Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) (USD $) In Thousands, except Per Share data	9 Months Ended		12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2009
Tax effect on cumulative effect of change in accounting principle for consolidation of variable interest entities			$ 3,980
Cash dividends declared:
Common stock, Cash dividend per share	$ 0.06	$ 0.03
Series B Preferred Stock [Member]
Cash dividends declared:
Preferred stock dividend per share		$ 37.50
Series A Preferred Stock [Member]
Cash dividends declared:
Preferred stock dividend per share	$ 63.75	$ 63.75