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Income Taxes - Rollforward Net operating losses (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Income Taxes    
Balance at January 1, $ 2,400,000 $ 1,900,000
NOL generated (utilized)   500,000
Other, including changes in foreign exchange rates 3,300,000  
Balance at December 31, 5,700,000 2,400,000
Valuation allowance $ 1,214,000 640,000
Global Intangible Low-Taxed Income (in percent) 10.50%  
Cash and cash equivalents $ 2,950,000 4,304,000
Cash balance held by foreign subsidiaries 1,800,000  
Penalties and interest related to unrecognized tax benefits $ 0 $ 0