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The Company and Significant Accounting Policies - Additional Information (Detail) |  |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended | 16 Months Ended |  |  |
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Mar. 17, 2023 USD ($) | Mar. 16, 2023 | Nov. 30, 2017 USD ($) | Jun. 30, 2023 USD ($) Market Advertiser Country AdvertisingCustomer Unit shares | Jun. 30, 2022 USD ($) shares | Mar. 31, 2022 USD ($) | Jun. 30, 2023 USD ($) Market Station Advertiser AdvertisingCustomer Country Segment Unit $ / shares shares | Jun. 30, 2022 USD ($) shares | Dec. 31, 2022 USD ($) Advertiser | Jun. 30, 2023 USD ($) Market Advertiser Country AdvertisingCustomer Unit shares | May 19, 2023 USD ($) | Apr. 03, 2023 | Mar. 01, 2022 USD ($)
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments | Segment |  |  |  |  |  |  | 3 |  |  |  |  |  |
Number of business units | Unit |  |  |  | 4 |  |  | 4 |  |  | 4 |  |  |
Sales Operations in Number of Countries | Country |  |  |  | 40 |  |  | 40 |  |  | 40 |  |  |
Restricted cash |  |  |  | $ 761,000 | $ 750,000 |  | $ 761,000 | $ 750,000 | $ 753,000 | $ 761,000 |  |  |
Retransmission consent revenue |  |  |  | 9,300,000 | 9,000,000 |  | $ 18,900,000 | 18,200,000 |  |  |  |  |
Number of Class A common stock shares converted | shares |  |  |  |  |  |  | 1 |  |  |  |  |  |
Share-based compensation expenses |  |  |  | $ 6,000,000 | $ 2,600,000 |  | $ 10,000,000 | $ 5,200,000 |  |  |  |  |
Shares of dilutive securities not included in computation of diluted earnings per share | shares |  |  |  | 2,038,928 | 81,700 |  | 1,122,655 | 49,556 |  |  |  |  |
Amount approved under share purchase |  |  |  |  |  |  |  |  |  |  |  |  | $ 20,000,000
Aggregate purchase price of repurchased shares |  |  |  |  | $ 4,138,000 | $ 7,142,000 |  |  |  |  |  |  |
Gain (loss) on debt extinguishment |  |  |  |  |  |  | $ (1,556,000) |  |  |  |  |  |
Unamortized debt issuance costs |  |  |  | $ 1,243,000 |  |  | $ 1,243,000 |  | $ 1,221,000 | $ 1,243,000 |  |  |
Number of advertisers represent more than five percent of trade receivables | Advertiser |  |  |  | 0 |  |  | 0 |  |  | 0 |  |  |
Number of advertising customer represented more than five percent of revenue | AdvertisingCustomer |  |  |  | 0 |  |  | 0 |  |  | 0 |  |  |
Estimated losses for bad debts |  |  |  | $ 700,000 | 900,000 |  | $ 1,700,000 | $ 1,000,000 |  |  |  |  |
Bad debts actually charged off |  |  |  | 100,000 | 300,000 |  | 300,000 | 400,000 |  |  |  |  |
Interest income related to available-for-sale securities |  |  |  | 1,037,000 | 722,000 |  | 1,897,000 | 1,128,000 |  |  |  |  |
Change in fair value of contingent consideration |  |  |  | 1,123,000 | $ 976,000 |  | (2,942,000) | $ 6,076,000 |  |  |  |  |
Accounts Payable and Accrued Expenses |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent Liability, Current |  |  |  | 19,100,000 |  |  | 19,100,000 |  |  | $ 19,100,000 |  |  |
Other Long-term Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent Liability, Noncurrent |  |  |  | 11,900,000 |  |  | 11,900,000 |  |  | 11,900,000 |  |  |
Related Parties |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount due from television stations for carriage |  |  |  | $ 10,700,000 |  |  | $ 10,700,000 |  |  | $ 10,700,000 |  |  |
Customer Concentration Risk | Revenue | Commercial Partner |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk percentage |  |  |  | 53.00% | 52.00% |  | 52.00% | 52.00% |  |  |  |  |
Largest Advertisers | Customer Concentration Risk | Trade Receivables |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of largest advertisers | Advertiser |  |  |  | 5 |  |  | 5 |  | 5 | 5 |  |  |
Concentration risk percentage |  |  |  |  |  |  | 6.00% |  | 2.00% |  |  |  |
Largest Advertisers | Customer Concentration Risk | Revenue |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk percentage |  |  |  | 13.00% | 16.00% |  | 13.00% | 16.00% |  |  |  |  |
Cisneros Interactive |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining ownership interest acquired |  |  |  | 49.00% |  |  | 49.00% |  |  | 49.00% |  |  |
Fair value of contingent consideration recognized |  |  |  | $ 8,000,000 |  |  | $ 8,000,000 |  | $ 41,400,000 | $ 8,000,000 |  |  |
Contingent Liability, Current |  |  |  | 7,100,000 |  |  | 7,100,000 |  | 30,000,000 | 7,100,000 |  |  |
Contingent Liability, Noncurrent |  |  |  | 900,000 |  |  | 900,000 |  | 11,400,000 | $ 900,000 |  |  |
Change in fair value of contingent consideration |  |  |  | $ 600,000 | $ 500,000 |  | $ 5,900,000 | $ 1,000,000 |  |  |  |  |
MediaDonuts |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest acquired |  |  |  | 100.00% |  |  | 100.00% |  |  | 100.00% |  |  |
Fair value of contingent consideration recognized |  |  |  | $ 20,900,000 |  |  | $ 20,900,000 |  | 22,200,000 | $ 20,900,000 |  |  |
Contingent Liability, Current |  |  |  | 11,000,000 |  |  | 11,000,000 |  | 6,500,000 | 11,000,000 |  |  |
Contingent Liability, Noncurrent |  |  |  | 9,900,000 |  |  | 9,900,000 |  | 15,700,000 | $ 9,900,000 |  |  |
Change in fair value of contingent consideration |  |  |  | $ 500,000 | 1,700,000 |  | $ 2,200,000 | 3,300,000 |  |  |  |  |
365 Digital |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest acquired |  |  |  | 100.00% |  |  | 100.00% |  |  | 100.00% |  |  |
Fair value of contingent consideration recognized |  |  |  | $ 200,000 |  |  | $ 200,000 |  | 200,000 | $ 200,000 |  |  |
Contingent Liability, Current |  |  |  | 100,000 |  |  | 100,000 |  |  | 100,000 |  |  |
Contingent Liability, Noncurrent |  |  |  | 100,000 |  |  | 100,000 |  | $ 200,000 | $ 100,000 |  |  |
Change in fair value of contingent consideration |  |  |  | $ 1,200,000 | 1,200,000 |  | $ 700,000 | 1,800,000 |  |  |  |  |
Adsmurai Acquisition |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest acquired |  |  |  |  |  |  |  |  |  |  |  | 51.00% |
Jack of Digital Acquisition |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest acquired |  |  |  | 85.00% |  |  | 85.00% |  |  | 85.00% |  |  |
Fair value of contingent consideration recognized |  |  |  | $ 300,000 |  |  | $ 300,000 |  |  | $ 300,000 |  |  |
Contingent Liability, Noncurrent |  |  |  | $ 300,000 |  |  | $ 300,000 |  |  | $ 300,000 |  |  |
BCNMonetize |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest acquired |  |  |  | 100.00% |  |  | 100.00% |  |  | 100.00% | 100.00% |  |
Fair value of contingent consideration recognized |  |  |  | $ 1,600,000 |  |  | $ 1,600,000 |  |  | $ 1,600,000 | $ 1,600,000 |  |
Contingent Liability, Current |  |  |  | 1,000,000 |  |  | 1,000,000 |  |  | 1,000,000 |  |  |
Contingent Liability, Noncurrent |  |  |  | 600,000 |  |  | 600,000 |  |  | 600,000 |  |  |
Available-for-Sale Securities |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income related to available-for-sale securities |  |  |  | 300,000 | 700,000 |  | $ 800,000 | 1,100,000 |  |  |  |  |
2017 Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Agreement date |  |  | Nov. 30, 2017 |  |  |  |  |  |  |  |  |  |
Gain (loss) on debt extinguishment | $ (1,600,000) |  |  |  |  |  |  |  |  |  |  |  |
Write-off of unamortized debt issuance costs | $ 1,100,000 |  |  |  |  |  |  |  |  |  |  |  |
2017 Credit Facility | Eurodollar Rate |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Variable interest rate basis spread on debt |  |  | 2.75% |  |  |  |  |  |  |  |  |  |
2017 Credit Facility | Base Rate Margin |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Variable interest rate basis spread on debt |  |  | 1.75% |  |  |  |  |  |  |  |  |  |
2017 Credit Facility | Term Loan B Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Secured debt |  |  | $ 300,000,000 |  |  |  |  |  |  |  |  |  |
Interest rate |  | 7.38% |  |  |  |  |  |  |  |  |  |  |
Maturity date of revolving credit facility |  |  | Nov. 30, 2024 |  |  |  |  |  |  |  |  |  |
2023 Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Agreement date | Mar. 17, 2023 |  |  |  |  |  |  |  |  |  |  |  |
Additional borrowing capacity | $ 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |
First lien net leverage ratio | 2.25% |  |  |  |  |  |  |  |  |  |  |  |
Maturity date of revolving credit facility | Mar. 17, 2028 |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs | $ 1,800,000 |  |  |  |  |  |  |  |  |  |  |  |
Certain customary events of default, number of business days to default in the payment of interest on borrowings |  |  |  |  |  |  | 3 days |  |  |  |  |  |
Certain customary events of default, number of business days to default in the payment of any other amounts |  |  |  |  |  |  | 5 days |  |  |  |  |  |
Certain customary events of default, number of days default continue for compliance with other agreement |  |  |  |  |  |  | 30 days |  |  |  |  |  |
Certain customary events of default, number of days default continue for financial statement delivery obligations |  |  |  |  |  |  | 10 days |  |  |  |  |  |
Certain customary events of default, indebtedness aggregate amount |  |  |  |  |  |  | $ 15,000,000 |  |  |  |  |  |
Certain customary events of default, failure in payment of final judgments aggregate amount |  |  |  |  |  |  | $ 15,000,000 |  |  |  |  |  |
Certain customary events of default, failure in payment of final judgments aggregate amount period |  |  |  |  |  |  | 30 days |  |  |  |  |  |
2023 Credit Facility | Term Loan A Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Secured debt | 200,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 7.95% |  |  |  |  |  |
Unamortized debt issuance costs |  |  |  | 1,200,000 |  |  | $ 1,200,000 |  |  | 1,200,000 |  |  |
Estimated fair value of term loan |  |  |  | $ 197,500,000 |  |  | $ 197,500,000 |  |  | $ 197,500,000 |  |  |
2023 Credit Facility | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Secured debt | 75,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Amount drawn | $ 11,500,000 |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 7.95% |  |  |  |  |  |
Class A common stock |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares repurchased | shares |  |  |  | 0 |  |  | 0 |  |  | 1,800,000 |  |  |
Aggregate purchase price of repurchased shares |  |  |  |  |  |  | $ 11,300,000 |  |  |  |  |  |
Average price of repurchased shares | $ / shares |  |  |  |  |  |  | $ 6.43 |  |  |  |  |  |
Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Total unrecognized compensation expense related to grants of restricted stock units |  |  |  | $ 24,600,000 |  |  | $ 24,600,000 |  |  | $ 24,600,000 |  |  |
Weighted average period for unrecognized compensation expense related to grants of restricted stock units |  |  |  |  |  |  | 1 year 8 months 12 days |  |  |  |  |  |
TelevisaUnivision |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Payment of sales representation fees to television stations |  |  |  | 1,500,000 | 1,800,000 |  | $ 3,000,000 | 3,300,000 |  |  |  |  |
Number of markets involved in sales and marketing | Market |  |  |  |  |  |  | 3 |  |  |  |  |  |
Retransmission consent revenue |  |  |  | $ 6,500,000 | $ 6,200,000 |  | $ 13,100,000 | $ 12,500,000 |  |  |  |  |
Common stock percentage held by Univision |  |  |  | 11.00% |  |  | 11.00% |  |  | 11.00% |  |  |
UniMas |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Affiliate advertising minutes per hour for which entity has right to sell |  |  |  |  |  |  | 4 minutes 30 seconds |  |  |  |  |  |
Minimum | 2023 Credit Facility | Base Rate Margin |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Variable interest rate basis spread on debt | 1.50% |  |  |  |  |  |  |  |  |  |  |  |
Minimum | 2023 Credit Facility | SOFR |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Variable interest rate basis spread on debt | 2.50% |  |  |  |  |  |  |  |  |  |  |  |
Minimum | 2023 Credit Facility | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 0.30% |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  |  | 1 year |  |  |  |  |  |
Minimum | TelevisaUnivision |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Affiliate advertising minutes per hour for which entity has right to sell |  |  |  |  |  |  | 4 minutes |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Terminated stock repurchase program amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 45,000,000
Maximum | 2023 Credit Facility | Base Rate Margin |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Variable interest rate basis spread on debt | 2.00% |  |  |  |  |  |  |  |  |  |  |  |
Maximum | 2023 Credit Facility | SOFR |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Variable interest rate basis spread on debt | 3.00% |  |  |  |  |  |  |  |  |  |  |  |
Maximum | 2023 Credit Facility | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 0.40% |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  |  | 4 years |  |  |  |  |  |
Television |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stations owned | Station |  |  |  |  |  |  | 49 |  |  |  |  |  |
Radio |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stations owned | Station |  |  |  |  |  |  | 45 |  |  |  |  |  |
Number of markets operated | Market |  |  |  | 14 |  |  | 14 |  |  | 14 |  |  |
Advertisements and Syndicate Radio Programming | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of markets owned | Market |  |  |  |  |  |  | 100 |  |  |  |  |  |

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