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10-Q Receivables and allowance for expected credit losses - Components of receivables, net (Details) - Trade Accounts Receivable - USD ($)
$ in Thousands
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]              
Trade receivables $ 220,948   $ 104,347     $ 98,114  
Contract receivables 173,318   82,428     70,768  
Retention receivables 30,224   28,859     25,173  
Receivables, gross 424,490   215,634     194,055  
Less expected credit loss 5,870 $ 5,822 5,477 $ 5,029 $ 5,126 5,406 $ 6,164
Receivables, net $ 418,620   $ 210,157     $ 188,649