The Company has operating leases for all of its facilities and autos. As of March 31, 2021 and December 31, 2020, operating lease   (“ROU”) assets were $127.7 million and $126.9 million, respectively, and the related accumulated amortization was $46.6 million and $42.9 million, respectively.    The operating lease cost, included in selling, general and administrative expense in the condensed consolidated statement of net and comprehensive income, consisted of the following (in thousands):    
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 | 
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|   | 
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Three Months Ended  March 31, | 
  | 
 
|   | 
   | 
2021 | 
  | 
   | 
2020 | 
  | 
 
 | 
   | 
  | 
  | 
  | 
   | 
  | 
  | 
  | 
 
 | 
   | 
$ | 
6,589 | 
  | 
   | 
$ | 
6,263 | 
  | 
 
 | 
   | 
  | 
1,400 | 
  | 
   | 
  | 
1,396 | 
  | 
 
 | 
   | 
  | 
(33 | 
)  | 
   | 
  | 
(77 | 
)  | 
 
|   | 
   | 
   | 
   | 
  | 
   | 
   | 
   | 
  | 
 
|   | 
   | 
$7,956 | 
  | 
   | 
$7,582 | 
  | 
 
|   | 
   | 
   | 
   | 
  | 
   | 
   | 
   | 
  | 
 
 
(1)  | 
Includes short-term lease cost and ROU asset amortization.   | 
 
  
(2)  | 
Primarily relates to common area maintenance, property taxes, insurance, utilities and parking.   | 
 
  Maturities of lease liabilities by year consisted of the following (in thousands):    
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 | 
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|   | 
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March 31, 2021 | 
  | 
 
 | 
   | 
$ | 
17,205 | 
  | 
 
 | 
   | 
  | 
17,722 | 
  | 
 
 | 
   | 
  | 
14,331 | 
  | 
 
 | 
   | 
  | 
12,089 | 
  | 
 
 | 
   | 
  | 
9,877 | 
  | 
 
 | 
   | 
  | 
10,835 | 
  | 
 
|   | 
   | 
   | 
   | 
  | 
 
Total future minimum lease payments  | 
   | 
  | 
82,059 | 
  | 
 
 | 
   | 
  | 
(5,716 | 
)  | 
 
|   | 
   | 
   | 
   | 
  | 
 
Present value of operating lease liabilities  | 
   | 
$ | 
76,343 | 
  | 
 
|   | 
   | 
   | 
   | 
  | 
 
  Supplemental cash flow information and noncash activity related to the operating leases consisted of the following (in thousands):    
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 | 
 | 
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|   | 
   | 
Three Months Ended  March 31, | 
  | 
 
|   | 
   | 
2021 | 
  | 
   | 
2020 | 
  | 
 
Operating cash flow information:  | 
   | 
  | 
  | 
  | 
   | 
  | 
  | 
  | 
 
Cash paid for amounts included in the measurement of operating lease liabilities  | 
   | 
$ | 
5,862 | 
  | 
   | 
$ | 
5,223 | 
  | 
 
 | 
   | 
  | 
  | 
  | 
   | 
  | 
  | 
  | 
 
ROU assets obtained in exchange for operating lease liabilities  | 
   | 
$ | 
3,004 | 
  | 
   | 
$ | 
3,109 | 
  | 
 
Tenant improvements owned by lessor related to ROU assets (1)  | 
   | 
$ | 
55 | 
  | 
   | 
$ | 
317 | 
  | 
 
   
(1)  | 
Reclassification from other assets current.   | 
 
  Other information related to the operating leases consisted of the following:    
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|   | 
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March 31, 2021 | 
  | 
  | 
December 31, 2020 | 
  | 
 
Weighted average remaining operating lease term  | 
   | 
  | 
4.71 years | 
  | 
  | 
  | 
4.70 years | 
  | 
 
Weighted average discount rate  | 
   | 
  | 
3.0 | 
%  | 
  | 
  | 
3.1 | 
%  | 
 
  
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