Preferred Stock and Common Stock Warrants-Preferred Stock (Details) (USD $)	12 Months Ended			0 Months Ended		0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Nov. 07, 2012 Fixed Rate Cumulative Perpetual Pfeferred Stock, Series A [Member]	Dec. 19, 2008 Fixed Rate Cumulative Perpetual Pfeferred Stock, Series A [Member]	Dec. 19, 2008 Common Stock [Member]
Class of Stock [Line Items]
Shares sold	0	0			35,000
Number of shares available for purchase with warrants						324,074
Common stock, par value	$ 0.01	$ 0.01				$ 0.01
Aggregate investment by U.S. Treasury						$ 35,000,000
Stock repurchased during period, value				35,400,000
Cash dividends paid on preferred stock	0	1,711,000	1,750,000	399,000
Preferred Stock, value, issued	$ 0	$ 0