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New accounting pronouncements (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Jan. 01, 2020
Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect adjustment $ 2,072,797 $ 1,849,541 $ 1,910,528   $ 1,815,705
Reduction to deferred tax liabilities (107,293) (70,482)      
Impact of new accounting pronouncements          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect adjustment         (209)
Impact of new accounting pronouncements | ASU 2016-13          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Allowance for doubtful accounts       $ 279  
Reduction to deferred tax liabilities       70  
Retained Earnings          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect adjustment $ 2,348,183 $ 2,070,005 $ 2,335,216   2,301,532
Retained Earnings | Impact of new accounting pronouncements          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect adjustment         $ (209)
Retained Earnings | Impact of new accounting pronouncements | ASU 2016-13          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative effect adjustment       $ 209