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Supplemental Financial Statement Information (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Gain on sale of assets $ 0 $ 2,522  
Proceeds from sale of businesses $ 0 $ 9,016  
Disposed of by Sale | Prior Year Business Sales      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Gain on sale of assets     $ 9,000
Proceeds from sale of businesses     3,000
Shelton, Connecticut Office Building      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Proceeds from sale leaseback transaction     51,000
Sale and leaseback transaction, gain     $ 14,000