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DEFERRED REVENUE AND COSTS (Tables)
12 Months Ended
Dec. 31, 2020
DEFERRED REVENUE AND COSTS [ABSTRACT]  
Schedule of deferred revenue and costs

Deferred revenue in the accompanying Consolidated Balance Sheets consist of the following (in thousands):

December 31,

 

    

2020

    

2019

 

Deferred Revenue - Current

$

39,956

$

39,447

Deferred Revenue - Long-term (included in Other long-term liabilities)

 

17,434

 

23,142

Total Deferred Revenue

$

57,390

$

62,589

Deferred costs in the accompanying Consolidated Balance Sheets consist of the following (in thousands):

December 31,

 

    

2020

    

2019

 

Deferred Costs - Current (included in Prepaids and other current assets)

$

25,669

$

26,092

Deferred Costs - Long-term (included in Other long-term assets)

 

18,015

 

25,436

Total Deferred Costs

$

43,684

$

51,528

Activity in the Company’s Deferred revenue accounts consists of the following (in thousands):

Balance as of December 31, 2019

$

62,589

Additions

 

136,852

Amortization

 

(142,051)

Balance as of December 31, 2020

$

57,390