Business Description And Significant Accounting Policies: Accounts Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts Receivable [Line Items]
Allowance for credit losses	$ (2,113)	$ (7,003)	$ (2,444)	$ (3,209)
Accounts receivable, net	321,652	265,961
Billed Revenues
Accounts Receivable [Line Items]
Accounts Receivable, Trade	181,027	146,899
Unbilled Revenues
Accounts Receivable [Line Items]
Accounts Receivable, Trade	$ 142,738	$ 126,065