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Leases (Tables)
12 Months Ended
Dec. 31, 2020
LEASES [Abstract]  
Components of Lease Expense

For the years ended December 31, 2020 and 2019, the components of lease expense were as follows (in thousands):

   
Year Ended December 31,
 
 
2020
   
2019
 
Operating lease cost
 
$
30,710
   
$
30,225
 
Short-term lease cost
   
1,454
     
1,212
 
Variable lease cost
   
5,752
     
6,074
 
Total lease cost*
 
$
37,916
   
$
37,511
 

*
Sublease income was immaterial
Supplemental Information Related to Leases

For the years ended December 31, 2020 and 2019, supplemental cash flow information related to leases was as follows (in thousands):

   
Year Ended December 31,
 
 
2020
   
2019
 
Cash paid for amounts included in the measurement of operating lease liabilities (in thousands)
 
$
30,307
   
$
30,077
 
                 
Right-of-use assets obtained in exchange for new operating lease liabilities (in thousands)*
 
$
32,710
   
$
113,222
 

*
Includes the right-of-use assets obtained in exchange for lease liabilities for the year 2019 - $82.6 million which were recognized upon adoption of ASC Topic 842 at January 1, 2019.
Future Lease Payments for Operating Leases

The aggregate future lease payments for operating leases as of December 31, 2020 were as follows (in thousands):

Fiscal Year
 
Amount
 
2021
 
$
29,819
 
2022
   
23,861
 
2023
   
17,787
 
2024
   
11,487
 
2025 and therafter
   
12,294
 
Total lease payments
 
$
95,248
 
Less: imputed interest
   
5,751
 
Total operating lease liabilities
 
$
89,497
 
Average Lease Terms and Discount Rates

Average lease terms and discount rates were as follows:

 
Year Ended December 31,
 
   
2020
   
2019
 
Weighted-average remaining lease term - Operating leases
 
4.05 Years
   
4.05 Years
 
             
Weighted-average discount rate - Operating leases
   
3.1
%
   
3.9
%