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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: Rollforward of the allowance for uncollectible accounts related to customer receivables (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward]    
Balance at beginning of period $ 5,034 $ 4,499
Additions to the allowance 3,617 3,265
Write-offs, net of recoveries (3,782) (2,730)
Balance at end of period $ 4,869 $ 5,034
Allowance for uncollectible accounts as a percentage of customer receivables 4.30% 4.20%