Income Taxes - summary of Company's net operating losses and tax credit carryforwards (Details) - USD ($) $ in Thousands |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|
| US Federal [Member] | ||
| Net Operating Losses [Abstract] | ||
| Net operating losses: | $ 1,688 | $ 0 |
| Year expiration begins | Indefinite | Indefinite |
| Tax Credit [Abstract] | ||
| Tax credits: | $ 671 | $ 255 |
| Year expiration begins | 2043 | 2043 |
| US State [Member] | ||
| Net Operating Losses [Abstract] | ||
| Net operating losses: | $ 9,084 | $ 1,772 |
| Year expiration begins | 2041 | 2041 |
| Tax Credit [Abstract] | ||
| Tax credits: | $ 316 | $ 247 |
| Year expiration begins | Indefinite | Indefinite |
| AUSTRALIA | ||
| Net Operating Losses [Abstract] | ||
| Net operating losses: | $ 959 | $ 0 |
| Year expiration begins | Indefinite | Indefinite |
| HONG KONG | ||
| Net Operating Losses [Abstract] | ||
| Net operating losses: | $ 920 | $ 902 |
| Year expiration begins | Indefinite | Indefinite |
| CHINA | ||
| Net Operating Losses [Abstract] | ||
| Net operating losses: | $ 99,555 | $ 95,291 |
| Year expiration begins | 2025 | 2025 |