| Recent Transactions - Total Acquisition Consideration Allocated (Detail) $ in Thousands | Jun. 30, 2019  USD ($) | 
|---|---|
| Liabilities | |
| Total purchase price consideration | $ 653 | 
| Digital Media [Member] | |
| Assets | |
| Property and equipment | 26 | 
| Customer lists and contracts | 185 | 
| Domain and brand names | 44 | 
| Subscriber base and lists | 416 | 
| Net assets acquired | 671 | 
| Liabilities | |
| Contract liabilities, short-term | (18) | 
| Total purchase price consideration | $ 653 | 
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- Definition Assets Acquisition Purchase Price Allocation Assets [Abstract] No definition available. 
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- Definition The value of domain and brand names recognized as of the acquisition date No definition available. 
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- Definition Assets Acquisition Purchase Price Allocation Subscriber Base and Lists No definition available. 
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- Definition The amount of property, plant, and equipment recognized as of the acquisition date. No definition available. 
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- Definition Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. No definition available. 
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- Definition The amount of customer lists and contracts recognized as of the acquisition date. No definition available. 
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- Definition Amount of assets acquired at the acquisition date. No definition available. 
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- Definition Business Acquisition Purchase Price Allocation Noncurrent Liabilities Contract liabilities, long-term. No definition available. 
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- References No definition available. 
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- Details 
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