SHARE-BASED COMPENSATION - Restricted Shares Plan (Details) - Restricted shares $ / shares in Units, $ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2025 HKD ($) $ / shares shares	Dec. 31, 2024 $ / shares shares	Dec. 31, 2023 $ / shares shares	Dec. 31, 2025 USD ($)
Shares awarded number
Outstanding at beginning	20,011,440	27,277,728	26,692,248
Vested	(6,709,496)	(6,826,392)	(5,683,896)
Granted	5,702,392	2,225,760	8,769,800
Forfeited	(1,842,848)	(2,665,656)	(2,500,424)
Outstanding at end	17,161,488	20,011,440	27,277,728
Weighted-average grant date fair value per share
Outstanding at beginning \| $ / shares	$ 5.9879	$ 5.6734	$ 5.3631
Vested \| $ / shares	9.3712	6.1047	5.0877
Granted \| $ / shares	10.9081	9.3712	6.1047
Forfeited \| $ / shares	6.2381	5.2956	5.2052
Outstanding at end \| $ / shares	$ 6.2732	$ 5.9879	$ 5.6734
Unrecognized compensation expenses related to the restricted shares	$ 943,387			$ 121,207
Unrecognized compensation expenses related to the restricted shares expected to be recognized over a weighted-average period	3 years 4 months 17 days
2019 Share Incentive Plan
Shares awarded number
Granted	5,702,392	2,225,760	8,769,800

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
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-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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