Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2012	Dec. 31, 2011
Receivables allowance for doubtful accounts (in Dollars)	$ 12	$ 63
Preferred stock par value (in Dollars per share)	$ 10	$ 10
Preferred stock, shares authorized	1,000	1,000
Preferred stock, shares issued	437	437
Preferred stock, shares outstanding	437	437
Preferred stock, percentage non-cumulative	5.00%	5.00%
Common stock, par value (in Dollars per share)	$ 0	$ 0
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	18,115,965	19,530,344
Common stock, shares outstanding	18,115,965	18,115,965
Treasury stock, shares of	0	1,414,379