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Description of Business and Summary of Significant Accounting Policies - Additional Information (Details) $ / shares in Units, $ in Millions				9 Months Ended	12 Months Ended
	Jul. 26, 2024 USD ($) shares	Jun. 28, 2024 USD ($) $ / shares shares	Jun. 26, 2024 $ / shares shares	Sep. 30, 2024 $ / shares shares	Dec. 31, 2023 $ / shares shares	Jun. 30, 2024 USD ($)	Jun. 25, 2024 $ / shares	Jun. 01, 2024 shares
Business Acquisition [Line Items]
Common shares, shares issued				128,313,144	109,505,150
Stockholders' Equity Note, Stock Split, Conversion Ratio			0.03
Forward stock split description			a 30-for-1 forward stock split
Common shares, par value | $ / shares			$ 0.0001	$ 0.0001	$ 0.0001		$ 0.01
Capital stock authorized			2,100,000,000
Common shares, shares authorized			2,000,000,000	2,000,000,000	2,000,000,000
Preferred stock, shares authorized			100,000,000	100,000,000	100,000,000
Preferred stock, par value | $ / shares			$ 0.0001	$ 0.0001	$ 0.0001
Preferred stock, shares issued				0	0
Preferred stock, shares outstanding				0	0
IPO
Business Acquisition [Line Items]
Shares of common stock		15,000,000
Offering price | $ / shares		$ 21
Net proceeds | $		$ 281.7
Underwriting discounts and commissions | $		22.1
Offering costs | $		$ 11.2
IPO | Chief Executive Officer
Business Acquisition [Line Items]
Accrued bonus | $						$ 30.0
IPO | NAVER U.Hub Inc
Business Acquisition [Line Items]
Shares of common stock		2,380,952
Offering price | $ / shares		$ 21
Net proceeds | $		$ 50.0
IPO | Maximum
Business Acquisition [Line Items]
Additional shares of common stock		2,250,000
Over-Allotment Option
Business Acquisition [Line Items]
Shares of common stock	1,371,549
Net proceeds | $	$ 26.8
Three Payment Gateways Companies | Customer Concentration Risk | Receivables
Business Acquisition [Line Items]
Concentration risk, percentage				57.80%	49.60%
Three Borrowers | Customer Concentration Risk | Loans Receivables
Business Acquisition [Line Items]
Concentration risk, percentage				89.20%	96.60%
Wattpad
Business Acquisition [Line Items]
Percentage of ownership acquired								100.00%
Common shares, shares issued								12,413,458

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