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Selected Balance Sheet Information: Accounts Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Selected Balance Sheet Information [Abstract]
Billed Accounts Receivable	$ 327,949	$ 267,571
Unbilled Revenue	154,571	243,574
Less: Allowance for Credit Losses	(5,431)	(2,953)	$ (4,486)	$ (2,113)
Account Receivable, net	$ 477,089	$ 508,192

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Selected Balance Sheet Information [Abstract]

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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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