CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY AND COMPREHENSIVE INCOME (LOSS) (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY AND COMPREHENSIVE INCOME (LOSS)
Shares issued under the dividend reinvestment plan	31,309	30,485
Shares issued under the dividend reinvestment plan, market value percentage (as a percent)	95.00%	95.00%
Stock options exercised	21,551
Stock issued under directors' stock plan	14,000	13,875
Stock-based compensation	86,997	141,903
Treasury stock reissued	110,427	142,665
Cash dividend on common stock, per share (in dollars per share)	$ 0.15	$ 0.15
Cash dividend on preferred stock (as a percent)	5.00%	5.00%
Unrealized gains (losses) on securities available for sale, taxes (in dollars)	$ 989	$ 842
Adjustment for (gains) losses included in net income, taxes (in dollars)	$ 416	$ 1,395