Accounting policies - Foreign Currency (Details) - USD ($) |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
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| Foreign currency | |||||
| Net foreign currency gains | $ 16,866 | $ 16,345 | $ 51,702 | $ 45,987 | |
| Cash and cash equivalents | |||||
| Money market fund | 18,400,000 | 18,400,000 | $ 18,100,000 | ||
| Deposits held in foreign bank | 18,800,000 | 18,800,000 | 12,000,000 | ||
| Certificate of deposit | |||||
| Cash and cash equivalents | |||||
| Cash and cash equivalents | $ 17,200,000 | $ 17,200,000 | $ 17,000,000 | ||
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- Definition Amount of deposits held in foreign banks, as stated in equivalent United States dollars. No definition available.
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- References No definition available.
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- Definition Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, before tax, of realized and unrealized gain (loss) from foreign currency transaction. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Details
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