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MARKETABLE SECURITIES (Table)
 12 Months Ended
Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]  
Schedule of summarizes the amortized cost, unrealized gains and losses, and fair value of available-for-sale marketable securities

The following tables summarize the amortized cost, unrealized gains and losses, and fair value of available-for-sale marketable securities as of December 31, 2018 and 2019:

December 31, 2018

Amortized cost

Gross unrealized losses*)

Gross unrealized gains

Fair value

 

Corporate debentures

$

77,758

$

(228

)

$

8

$

77,538

U.S. agencies debentures

6,692

(23

)

2

6,671

 

Total

$

84,450

$

(251

)

$

10

$

84,209

*) Out of the unrealized losses, an amount of $149 has been in a continuous unrealized loss position for twelve months or longer.

December 31, 2019

Amortized cost

Gross unrealized losses*)

Gross unrealized gains

Fair value

 

Corporate debentures

$

104,952

$

(21

)

$

651

$

105,582

U.S. agencies debentures

81,227

(10

)

21

81,238

 

Total

$

186,179

$

(31

)

$

672

$

186,820

*) Out of the unrealized losses, an amount of $5 has been in a continuous unrealized loss position for twelve months or longer.

Schedule of summarizes the amortized cost and fair value of available-for-sale marketable securities

The following table summarizes the amortized cost and fair value of available-for-sale marketable securities as of December 31, 2018 and 2019, by contractual years-to maturity:

December 31,

2018

2019

Amortized cost

Fair value

Amortized cost

Fair value

 

Due within one year

$

60,062

$

59,948

$

132,321

$

132,412

Due between one and four years

24,388

24,261

53,858

54,408

 

$

84,450

$

84,209

$

186,179

$

186,820