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FAIR VALUE MEASUREMENTS (Table)
 12 Months Ended
Dec. 31, 2019
Fair Value Disclosures [Abstract]  
Schedule of fair value of financial assets and liabilities

The following tables present the fair value of money market funds and marketable securities for the years ended December 31, 2018 and 2019:

December 31,

2018

2019

Level 1

Level 2

Total

Level 1

Level 2

Total

Cash equivalents:

Money market funds

$

335

$

-

$

335

$

213,494

$

-

$

213,494

U.S. agencies debentures

-

-

-

-

25,058

25,058

 

Marketable securities:

Corporate debentures

-

77,538

77,538

-

105,582

105,582

U.S. agencies debentures

-

6,671

6,671

-

81,238

81,238

 

Total assets measured at fair value

$

335

$

84,209

$

84,544

$

213,494

$

211,878

$

425,372