Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) (USD $)	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash dividend declared per share	$ 0.10	$ 0.10
Common Stock
Restricted common stock, per share issue price	$ 12.70	$ 10.10
Issuance of restricted stock, shares	18,525	18,325
Forfeiture of restricted stock, shares	643	1,018
Additional Paid-In Capital
Restricted common stock, per share issue price	$ 12.70	$ 10.10
Issuance of restricted stock, shares	18,525	18,325
Forfeiture of restricted stock, shares	643	1,018
Retained Earnings
Cash dividend declared per share	$ 0.10	$ 0.10