Annual report pursuant to Section 13 and 15(d)

NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textual)

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NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Jan. 01, 2018
Dec. 31, 2015
Goodwill $ 32,466,000 $ 32,466,000      
Cash, Cash Equivalents, and Short-term Investments 85,000,000        
Stockholders' Equity Attributable to Parent 134,045,000 170,098,000 $ 99,098,000 $ 176,373,000 $ 67,721,000
Net Cash Provided by (Used in) Operating Activities $ (39,111,000) $ (22,655,000) $ (13,014,000)    
Minimum [Member]          
Number of years subject to statute of limitations by major tax jurisdiction 3 years        
Minimum [Member] | Leasehold Improvements [Member]          
Property, Plant and Equipment, Useful Life 5 years        
Minimum [Member] | Equipment [Member]          
Property, Plant and Equipment, Useful Life 3 years        
Maximum [Member]          
Number of years subject to statute of limitations by major tax jurisdiction 4 years        
Maximum [Member] | Leasehold Improvements [Member]          
Property, Plant and Equipment, Useful Life 10 years        
Maximum [Member] | Equipment [Member]          
Property, Plant and Equipment, Useful Life 7 years