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Other Assets and Accrued Liabilities - Long-Term Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Other Liabilities Disclosure [Abstract]    
Broadband contract acquisition costs $ 5,934 $ 5,645
Prepaid maintenance and software expenses 7,233 4,653
Deferred charges and other assets $ 13,167 $ 10,298