Quarterly report pursuant to Section 13 or 15(d)

BASIC AND DILUTED NET EARNINGS PER SHARE (Details Textual)

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BASIC AND DILUTED NET EARNINGS PER SHARE (Details Textual) - shares
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Earnings Per Share Basic And Diluted [Line Items]    
Options to purchase Class A common stock 1,729,000 1,628,534
Dilutive shares 367,940 447,689