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SUPPLEMENTAL BALANCE SHEET AND CASH FLOW INFORMATION (trade accounts receivable) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Trade accounts receivable
Trade accounts receivable - gross	[1]	$ 183,196	$ 197,546
Allowance for credit losses		(9,120)	(6,541)	$ (4,182)
Trade accounts receivable - net		174,076	191,005
Unbilled receivables		47,341	43,673
Changes in allowance for credit losses
Balance, beginning of year		6,541	4,182	4,130
Bad debt expense		12,910	7,045	4,185
Write-offs and other		(10,331)	(4,686)	(4,133)
Balance, end of year		$ 9,120	$ 6,541	$ 4,182
[1] Includes unbilled receivables of $47,341 as of December 31, 2024 and $43,673 as of December 31, 2023.

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Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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Amount of allowance for credit loss on accounts receivable, classified as current.

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Amount of direct write-downs of accounts receivable charged against the allowance.

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Amount of expense (reversal of expense) for expected credit loss on accounts receivable.

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