Condensed Consolidated Statements Of Changes In Stockholders' Equity (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Condensed Consolidated Statements Of Changes In Stockholders' Equity [Abstract]
Other comprehensive income, tax	$ 357	$ 1,651
Dividends on common stock, per share	$ 0.07	$ 0.07
Issuance of common stock under dividend reinvestment plan, shares	8,731	5,194
Issuance of common stock under stock incentive plan, shares		6,450
Vesting of restricted stock under stock incentive plan, shares	4,032	8,659
Stock purchased under stock repurchase plan, shares	220,265