v3.25.2
Goodwill and Other Intangible Assets (Other Intangible Assets) (Details 2) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Amortized Intangible Assets [Line Items]    
Gross Carrying Amount $ 473,839 $ 489,425
Accumulated Amortization 436,808 432,729
Net Carrying Amount 37,031 56,696
Indefinite-Lived Intangible Assets [Line Items]    
Indefinite-Lived Intangible Assets 166,374 164,323
Franchise Agreements [Member]    
Indefinite-Lived Intangible Assets [Line Items]    
Indefinite-Lived Intangible Assets 92,158 92,158
Trade Names and Trademarks [Member]    
Indefinite-Lived Intangible Assets [Line Items]    
Indefinite-Lived Intangible Assets 63,066 60,994
FCC licenses [Member]    
Indefinite-Lived Intangible Assets [Line Items]    
Indefinite-Lived Intangible Assets 11,000 11,000
Other [Member]    
Indefinite-Lived Intangible Assets [Line Items]    
Indefinite-Lived Intangible Assets 150 171
Student and Customer Relationships [Member]    
Amortized Intangible Assets [Line Items]    
Gross Carrying Amount 279,276 281,140
Accumulated Amortization 258,303 252,969
Net Carrying Amount $ 20,973 $ 28,171
Student and Customer Relationships [Member] | Minimum [Member]    
Amortized Intangible Assets [Line Items]    
Useful Life 2 years 2 years
Student and Customer Relationships [Member] | Maximum [Member]    
Amortized Intangible Assets [Line Items]    
Useful Life 10 years 10 years
Trade Names and Trademarks [Member]    
Amortized Intangible Assets [Line Items]    
Gross Carrying Amount $ 110,497 $ 116,081
Accumulated Amortization 98,945 94,408
Net Carrying Amount $ 11,552 $ 21,673
Trade Names and Trademarks [Member] | Minimum [Member]    
Amortized Intangible Assets [Line Items]    
Useful Life 2 years 2 years
Trade Names and Trademarks [Member] | Maximum [Member]    
Amortized Intangible Assets [Line Items]    
Useful Life 10 years 10 years
Network Affiliation Agreements [Member]    
Amortized Intangible Assets [Line Items]    
Useful Life 10 years 10 years
Gross Carrying Amount $ 17,400 $ 17,400
Accumulated Amortization 14,717 13,848
Net Carrying Amount 2,683 3,552
Databases and Technology [Member]    
Amortized Intangible Assets [Line Items]    
Gross Carrying Amount 29,852 33,290
Accumulated Amortization 29,852 33,290
Net Carrying Amount $ 0 $ 0
Databases and Technology [Member] | Minimum [Member]    
Amortized Intangible Assets [Line Items]    
Useful Life 3 years 3 years
Databases and Technology [Member] | Maximum [Member]    
Amortized Intangible Assets [Line Items]    
Useful Life 6 years 6 years
Other [Member]    
Amortized Intangible Assets [Line Items]    
Gross Carrying Amount $ 36,814 $ 41,514
Accumulated Amortization 34,991 38,214
Net Carrying Amount $ 1,823 $ 3,300
Other [Member] | Minimum [Member]    
Amortized Intangible Assets [Line Items]    
Useful Life 1 year 1 year
Other [Member] | Maximum [Member]    
Amortized Intangible Assets [Line Items]    
Useful Life 8 years 8 years