Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v3.7.0.1
Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
Mar. 31, 2017
Dec. 31, 2016
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts receivable $ 272,000 $ 156,000
Preferred stock, par value $ 0.001 $ 0.001
Preferred stock, shares authorized 2,000,000 2,000,000
Preferred stock, shares issued 294,656 294,656
Preferred stock, shares outstanding 294,656 294,656
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 19,000,000 19,000,000
Common stock, shares, issued 10,915,685 10,792,352
Common stock, shares, outstanding 10,174,886 10,051,553
Treasury stock, shares 740,799 740,799