Quarterly report pursuant to Section 13 or 15(d)

CASH AND CASH EQUIVALENTS (Details)

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CASH AND CASH EQUIVALENTS (Details) - USD ($)
Jun. 30, 2017
Dec. 31, 2016
Jun. 30, 2016
Dec. 31, 2015
Cash And Cash Equivalents Details        
Cash $ 9,318,000 $ 9,452,000    
Money market fund 42,577,000 41,466,000    
Total $ 51,895,000 $ 50,918,000 $ 35,369,000 $ 20,608,000