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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, 2025
Dec. 31, 2024
Accounts Receivable, Allowance for Credit Loss [Roll Forward]    
Balance at beginning of period $ 5,071 $ 4,869
Additions to the allowance 3,004 4,523
Write-offs, net of recoveries (4,287) (4,321)
Balance at end of period $ 3,788 $ 5,071
Allowance for uncollectible accounts as a percentage of customer receivables 3.70% 4.20%