Annual report pursuant to Section 13 and 15(d)

Consolidated Statements Of Changes In Stockholders' Equity (Parenthetical)

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Consolidated Statements Of Changes In Stockholders' Equity (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Consolidated Statements Of Changes In Stockholders' Equity [Abstract]      
Unrealized holding gains arising during the period, tax $ 4,346 $ 345 $ 3,378
Reclassification adjustment for gains (losses) included in net income, tax 179 20 57
Other comprehensive income, tax $ 4,167 $ 325 $ 3,321
Issuance of common stock, shares   7,477,273 4,725,000
Dividends on common stock, per share $ 0.28 $ 0.25 $ 0.3
Issuance of common stock under dividend reinvestment plan, shares 11,932 19,085 32,344
Issuance of common stock under stock incentive plan, shares 29,625 7,016 1,800
Vesting of restricted stock under stock incentive plan, shares 17,312 24,939 14,474
Repurchase of preferred stock, shares 35,595   59,000
Issuance of common stock for services rendered, shares 46,806 42,680