Supplemental Financial Statement Information (Allowance for Credit on Losses for Accounts and Other Receivables) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of year	$ 5,864	$ 29,179
Amounts charged to expense	3,652	5,280
Write-offs, recoveries and other	(5,299)	(21,763)
Balance at end of period	4,217	12,696
Allowance for doubtful accounts	4,217	12,696
Accounts and other receivables
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at end of period	4,217	12,176
Allowance for doubtful accounts	4,217	12,176
Other assets
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at end of period	0	520
Allowance for doubtful accounts	$ 0	$ 520