Condensed Consolidated Statements Of Changes In Stockholders' Equity (Parenthetical) (USD $) In Thousands, except Share data	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Condensed Consolidated Statements Of Changes In Stockholders' Equity
Unrealized holding gains arising during the period, tax	$ 3,830	$ 2,246
Reclassification adjustment for gains (losses) included in net income, tax	6	8
Other comprehensive income, tax	$ 3,836	$ 2,238
Issuance of common stock, shares	0	7,477,273
Dividends on common stock, per share	$ 0.14	$ 0.12
Issuance of common stock under dividend reinvestment plan, shares	9,747	9,846
Issuance of common stock under stock incentive plan, shares	6,450	4,541
Vesting of restricted stock under stock incentive plan, shares	12,243	14,334