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SHORT TERM INVESTMENTS, PREPAID EXPENSES AND OTHER CURRENT ASSETS
 9 Months Ended
Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
SHORT TERM INVESTMENTS, PREPAID EXPENSES AND OTHER CURRENT ASSETS SHORT TERM INVESTMENTS, PREPAID EXPENSES AND OTHER CURRENT ASSETS
Short Term Investments

The Company's short term investments are classified as below with maturities of twelve months or less, unrealized gains and losses were immaterial for the periods presented:
Security TypeFair Value
September 30, 2019December 31,
2018
(in thousands)
Government$1,002  $—  
Asset Backed3,354  1,786  
Industrial5,484  2,381  
Financial7,321  7,136  
$17,161  $11,303  

Prepaid Expenses and Other Current Assets

The components of prepaid expenses and other current assets are as presented below:
September 30,
2019		December 31,
2018
(in thousands) 
Prepaid income tax $1,425  $5,429  
Other prepaid expenses and other current assets509  1,151  
 $1,934  $6,580  

In June 2019, a tax refund of $4.0 million for the prepayment made during 2018 was received from the Internal Revenue Service.