Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012
Securities held to maturity fair values	$ 60,758	$ 61,496	$ 61,226
Preferred stock, shares authorized	5,000,000	5,000,000	5,000,000
common stock, shares authorized	40,000,000	40,000,000	40,000,000
Common stock, shares issued	19,669,302	19,669,302	16,937,641
Common stock, shares outstanding	19,669,302	19,669,302	16,937,641
Series B
Preferred stock, shares issued	63,500	63,500	63,500
Preferred stock, shares outstanding	63,500	63,500	63,500
Series C
Preferred stock, shares issued	728,706	728,706	0
Preferred stock, shares outstanding	728,706	728,706	0