Consolidated Statements Of 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 Stockholders' Equity [Abstract]
Issuance of restricted stock, shares	40,666	29,640	60,350
Stock issued during period, shares, restricted stock award, forfeited	7,437	7,454	5,300
Issuance of common stock for the employee stock purchase plan, shares	2,628	3,465	2,495
Change in unrealized appreciation on available-for-sale securities, income taxes (credit)	$ (69)	$ (49)	$ (365)