Quarterly report pursuant to Section 13 or 15(d)

SHORT TERM INVESTMENTS, PREPAID EXPENSES AND OTHER CURRENT ASSETS - Schedule of Short Term Investments (Details)

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SHORT TERM INVESTMENTS, PREPAID EXPENSES AND OTHER CURRENT ASSETS - Schedule of Short Term Investments (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]    
Short term investments $ 13,302 $ 17,779
Government    
Debt Securities, Available-for-sale [Line Items]    
Short term investments 1,027 1,012
Asset Backed    
Debt Securities, Available-for-sale [Line Items]    
Short term investments 2,895 4,854
Industrial    
Debt Securities, Available-for-sale [Line Items]    
Short term investments 4,443 5,034
Financial    
Debt Securities, Available-for-sale [Line Items]    
Short term investments $ 4,937 $ 6,879