Consolidated Balance Sheets (Parentheticals) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Allowance for doubtful accounts (in Dollars)	$ 199,000	$ 162,000
Series C redeemable, convertible preferred stock, Authorized shares	1,000,000
Common stock, par value (in Dollars per share)	$ 1	$ 1
Common stock, authorized shares	4,000,000	4,000,000
Common stock, issued shares	1,879,319	1,879,319
Common stock, outstanding shares	1,687,319	1,687,319
Treasury stock at cost, shares	192,000	192,000
Series C Preferred Stock [Member]
Series C redeemable, convertible preferred stock, par value (in Dollars per share)	$ 1.00	$ 1.00
Series C redeemable, convertible preferred stock, Authorized shares	100,000	100,000
Series C redeemable, convertible preferred stock, Liquidation preference (in Dollars per share)	$ 5.00	$ 5
Series C redeemable, convertible preferred stock, Issued	60,000	0
Series C redeemable, convertible preferred stock, outstanding shares	60,000	0