Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.8.0.1
Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Accounts receivable, allowance for doubtful accounts $ 725 $ 720
Preferred stock, par value $ 0.001 $ .001
Preferred stock, shares authorized 2,000,000 2,000,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 30,000,000 30,000,000
Common stock, shares issued 11,754,697 11,738,623
Common stock, shares outstanding 11,747,055 11,730,981
Treasury stock, shares 7,642 7,642
Series B Preferred Stock [Member]    
Preferred stock of subsidiary, par value $ 1.00 $ 1.00
Preferred stock of subsidiary, shares authorized 1,467,396 1,467,396
Preferred stock of subsidiary, shares issued 1,284,730 1,284,730
Preferred stock of subsidiary, shares outstanding 1,284,730 1,284,730
Preferred stock of subsidiary, liquidation value $ 1.00 $ 1.00
Preferred stock of subsidiary, accrued and unpaid dividends $ 1,011 $ 995