Annual report pursuant to Section 13 and 15(d)

Schedule II - Valuation and Qualifying Accounts (Details)

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Schedule II - Valuation and Qualifying Accounts (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period $ 7,777 $ 7,858 $ 2,646
Charged to Costs and Expenses (4,232) (23) 5,006
Charged to Other Operating Revenue 5,091 6,426 6,339
Deductions 6,035 6,484 6,133
Balance at End of Period 2,601 7,777 7,858
Allowance for doubtful accounts      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 1,499 1,707 1,246
Charged to Costs and Expenses 21 (46) 776
Charged to Other Operating Revenue 0 0 0
Deductions 396 162 315
Balance at End of Period 1,124 1,499 1,707
Allowance for revenue adjustments      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 1,630 1,526 1,005
Charged to Costs and Expenses 0 0 0
Charged to Other Operating Revenue 5,091 6,426 6,339
Deductions 5,639 6,322 5,818
Balance at End of Period 1,082 1,630 1,526
Deferred tax valuation allowance      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 4,648 4,625 395
Charged to Costs and Expenses (4,253) 23 4,230
Charged to Other Operating Revenue 0 0 0
Deductions 0 0 0
Balance at End of Period $ 395 $ 4,648 $ 4,625