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v3.19.1

Subsequent Events - Additional Information (Details) - USD ($) |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Apr. 11, 2019 | Jan. 31, 2019 | Dec. 19, 2018 | Dec. 31, 2018
AioTV |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Cash consideration by the buyer |  |  | $ 1 |
Transaction closing date |  |  |  | Apr. 11, 2019
Subsequent Event | Shah Capital Opportunity Fund LP and Hongliang Lu and Lu’s |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Aggregate of ordinary shares |  | 9,200,000 |  |
Shares price per share |  | $ 5.35 |  |
Aggregate purchase price |  | $ 49,220,000 |  |
Subsequent Event | AioTV |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Transaction closing date | Apr. 11, 2019 |  |  |

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