Other Financial Information - Change in the income tax valuation allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Regulatory Asset [Line Items]
Beginning balance	$ 23	$ 23
Additions charged to expense	25	235
Reductions charged to other accounts	(26)	(235)
Ending balance	22	23
Income tax valuation allowance [Member]
Regulatory Asset [Line Items]
Beginning balance	477	0
Additions charged to expense	6,693	477
Reductions charged to other accounts	0	0
Ending balance	$ 7,170	$ 477