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RELATED PARTY BALANCES AND TRANSACTIONS - Additional Information (Details) - HKD ($) $ in Thousands | 6 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Payables to clients |  |  |  |  |
RELATED PARTY BALANCES AND TRANSACTIONS |  |  |  |  |
Payables to directors and officers | $ 47,882 |  | $ 29,322 |  | $ 44,480
Directors and officers and their spouses | Brokerage Services and Margin Loans |  |  |  |  |
RELATED PARTY BALANCES AND TRANSACTIONS |  |  |  |  |
Revenues earned | $ 394 | $ 952 | $ 528 | $ 1,255 |

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