Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Receivables allowance for doubtful accounts	$ 18	$ 18
Preferred stock, par value (in Dollars per share)	$ 10	$ 10
Preferred stock, shares authorized (shares)	1,000	1,000
Preferred stock, shares issued (shares)	437	437
Preferred stock, shares outstanding (shares)	437	437
Preferred stock, percentage non-cumulative (percent)	5.00%	5.00%
Common stock, par value (in Dollars per share)	$ 0	$ 0
Common stock, shares authorized (shares)	40,000,000	40,000,000
Common stock, shares issued (shares)	18,115,965	18,115,965
Common stock, shares outstanding (shares)	17,717,186	17,750,421
Treasury stock (shares)	398,779	365,544