Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)

v3.7.0.1
Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Accounts receivable, allowance for doubtful accounts $ 352 $ 272
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) 11,705,989 11,677,025
Common stock, shares outstanding (in shares) 11,698,347 11,669,383
Treasury stock, shares (in shares) 7,642 7,642
Series B Preferred Stock [Member]    
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 dollars per share) $ 1 $ 1
Preferred stock of subsidiary, accrued and unpaid dividends $ 963 $ 931