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Equity - Additional Information (Detail) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2019 Title shares | Mar. 31, 2018 USD ($) $ / shares shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($) shares
Equity [Line Items] |  |  |  |
Ownership percentage of common stock shares outstanding of chairman |  |  | 81.00% |
Net proceeds from issuance of shares | $ |  |  | $ 287 | $ 37,430
Original Content Acquisition [Member] |  |  |  |
Equity [Line Items] |  |  |  |
Number of titles of original content acquired to be integrated | Title | 450 |  |  |
Class B Common Stock Converted Into Class A Common Stock [Member] |  |  |  |
Equity [Line Items] |  |  |  |
Stock conversion ratio |  |  | 100.00% |
Class B Common Stock [Member] |  |  |  |
Equity [Line Items] |  |  |  |
Common stock, shares outstanding |  |  | 5,400,000 | 5,400,000
Common stock voting rights |  |  | ten votes on all matters submitted to a vote of shareholders. |
Class B Common Stock [Member] | Board of Directors Chairman and CEO [Member] |  |  |  |
Equity [Line Items] |  |  |  |
Ownership percentage of common stock shares outstanding of chairman |  |  | 100.00% |
Common stock, shares outstanding |  |  | 5,400,000 |
Class A Common Stock [Member] |  |  |  |
Equity [Line Items] |  |  |  |
Common stock, shares outstanding |  |  | 13,023,231 | 12,500,139
Common stock voting rights |  |  | one vote for each share held on all matters submitted to a vote of shareholders. |
Class A Common Stock [Member] | Complementary Streaming Platform [Member] |  |  |  |
Equity [Line Items] |  |  |  |
Issuance of common stock as consideration for acquisition | 404,891 |  |  |
Class A Common Stock [Member] | Complementary Streaming Platform [Member] | Maximum [Member] |  |  |  |
Equity [Line Items] |  |  |  |
Additional number of shares to be issued as consideration | 139,665 |  |  |
Class A Common Stock [Member] | Original Content Acquisition [Member] |  |  |  |
Equity [Line Items] |  |  |  |
Issuance of common stock as consideration for acquisition | 79,941 |  |  |
Class A Common Stock [Member] | Underwritten Public Offering [Member] |  |  |  |
Equity [Line Items] |  |  |  |
Common stock shares issued |  | 2,683,333 |  |
Public offering price per share | $ / shares |  | $ 15.00 |  |
Net proceeds from issuance of shares | $ |  | $ 37,100 |  |
Class A Common Stock [Member] | Board of Directors Chairman and CEO [Member] |  |  |  |
Equity [Line Items] |  |  |  |
Common stock, shares outstanding |  |  | 472,561 |

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