Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Unaudited) (Parentheticals)

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Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($)
Sep. 30, 2015
Dec. 31, 2014
Preferred stock of subsidiary, par value (in dollars per share) $ 1 $ 1
Preferred stock of subsidiary, shares authorized (in shares) 1,467,396 1,467,396
Preferred stock of subsidiary, shares issued (in shares) 1,284,730 1,284,730
Preferred stock of subsidiary, shares outstanding (in shares) 1,284,730 1,284,730
Preferred stock of subsidiary, liquidation value (in shares) 1 1
Preferred stock of subsidiary, accrued and unpaid dividends $ 851,000 $ 803,000
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 2,000,000 2,000,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 30,000,000 30,000,000
Common stock, shares issued (in shares) 11,535,367 11,476,485
Common stock, shares outstanding (in shares) 11,527,725 11,468,843
Common stock in treasury, at cost (in shares)
Accounts receivable, net of allowance for doubtful accounts $ 1,880 $ 2,170