Recent Transactions - Acquisitions - Additional Information (Detail) - USD ($) |
6 Months Ended | |||||
|---|---|---|---|---|---|---|
Jun. 01, 2021 |
Apr. 28, 2021 |
Jun. 30, 2021 |
Mar. 08, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Business Acquisition [Line Items] | ||||||
| Asset Acquisition, contingent earnout consideration | $ 11,000 | |||||
| Goodwill | $ 23,785,000 | $ 23,757,000 | $ 23,998,000 | |||
| Business combination, recognized identifiable assets acquired and liabilities assumed, contingent liability | $ 100,000 | |||||
| Triple Threat Trader Newsletter [Member] | ||||||
| Business Acquisition [Line Items] | ||||||
| Asset Acquisition, transaction costs | $ 11,000 | |||||
| KDIA AM AND KDYA AM Sanfrancisco California [Member] | ||||||
| Business Acquisition [Line Items] | ||||||
| Payments to Acquire Businesses | $ 600,000 | |||||
| Goodwill | $ 4,000 | |||||
| Centerline New Media Domain And Digital Assets [Member] | ||||||
| Business Acquisition [Line Items] | ||||||
| Payments to Acquire Businesses | $ 1,300,000 | |||||
| Goodwill | $ 24,000 |
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- Definition Amount of liability recognized from contingent consideration in asset acquisition. No definition available.
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- Definition Asset Acquisition transaction costs. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition The amount of liability arising from an inherited contingency (as defined) which has been recognized as of the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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