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ORGANIZATION AND PRINCIPAL ACTIVITIES - Additional Information (Detail) ¥ in Thousands | May 10, 2019 CNY (¥) shares | Dec. 31, 2019 CNY (¥) | May 10, 2019 $ / shares
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Summary of Organization and Principal Activities [Line Items] |  |  |
Stock issued equivalent common stock shares | shares | 16,100,000 |  |
IPO Expenses Capitalization | ¥ | ¥ 234,354 |  |
American Depositary Share [Member] |  |  |
Summary of Organization and Principal Activities [Line Items] |  |  |
Shares issued in initial public offering ("IPO") (in shares) | shares | 4,025,000 |  |
Shares issued, price per share | $ / shares |  |  | $ 10.50
Shanghai Caiyin Asset Management Co Ltd |  |  |
Summary of Organization and Principal Activities [Line Items] |  |  |
Guarantee liability | ¥ |  | ¥ 2,900,000 |

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