Other Liabilities - Summary of other liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Other liabilities
Employee compensation and benefits	$ 29,249	$ 25,916
Deferred FCC repack income	41,863	46,205
Programming liability	274,564	263,093
Liability for pension benefits	73,651	78,279
Liabilities for uncertain tax positions	16,334	14,144
Other liabilities	30,146	28,063
Other	18,374	28,359
Other liabilities (less current portion)	$ 484,181	$ 484,059