Annual report [Section 13 and 15(d), not S-K Item 405]

Intangible assets, net - Amortization Expense (Details)

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Intangible assets, net - Amortization Expense (Details) - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Intangible assets, net      
Amortization expense $ 411,000 $ 387,000 $ 809,000