Unaudited Condensed Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Amortized cost (in Dollars)	$ 556,258	$ 558,630
Fair value (in Dollars)	948	956
Preferred stock, par value (in Dollars per share)	$ 0	$ 0
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, Series A shares issued	30,000	30,000
Preferred stock, Series A shares outstanding	30,000	30,000
Preferred stock, Liquidation preference (in Dollars)	$ 30,000	$ 30,000
Common stock, par value per share (in Dollars per share)	$ 0.125	$ 0.125
Common stock, shares authorized	14,608,000	14,608,000
Common stock, shares issued	7,472,838	7,469,813
Common stock, shares outstanding	7,472,838	7,469,813