Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)

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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
Sep. 30, 2017
Dec. 31, 2016
Condensed Consolidated Balance Sheets    
Accounts receivable, allowance for doubtful accounts $ 335,000 $ 272,000
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 50,000,000 50,000,000
Common stock, shares issued 33,393,804 33,008,865
Common stock, shares outstanding 33,393,804 33,008,865