Consolidated Balance Sheets (Parenthetical) (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Assets
Fair value of securities held to maturity	$ 147,509	$ 151,429
Stockholders' Equity
Preferred stock par value	$ 0	$ 0
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 1.25	$ 1.25
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	6,939,974	6,939,974
Common stock, shares outstanding	6,939,974	6,939,974